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Lady Gaga just gave a couple in England the most AWESOME engagement story ... by helping pull off a surprise marriage proposal during her concert.

Gaga called her friend Jay Lomax and his boyfriend Sean Martins out on stage Tuesday night in Manchester, England. Watch the video (around 1:17) ... Lomax gets down on one knee and pops the question.

Sean tells us he was completely shocked -- and it turns out the whole thing had been plotted for months by Gaga, Jay, and Jay's famous uncle ... photographer (and Gaga friend) Terry Richardson.

Martins says he only got suspicious when Lomax wouldn't let him drink too much at the concert ... and told him to take off his glasses before going out on stage.

Sean says his engagement ring is inscribed with the lyric, "We could belong together" ... from his and Jay's favorite Gaga song, "Artpop."

Martins says there's only one thing that could top the proposal -- having Cher perform at the wedding.

Serena William's swag just reached new levels -- 'cause the tennis superstar got herself a new luxury watch that comes fully equipped with 323 DIAMONDS!!!

It's called an Audemars Piguet Millenary timepiece -- made with 18-carat pink gold, a black mother-of-pearl dial and 323 brilliant-cut diamonds! The watch usually runs around $75K.

A rep for Audemars -- popular with celebs like Jay-Z -- says the luxury watchmaker has a relationship with the tennis champ ... but this watch wasn't a freebie from them.

"Serena is a friend of the brand but that isn't a piece we gave her," the rep tells TMZ Sports.

The war may be over -- but NY Knicks superfan Michael Rapaport couldn't help but take one last shot at Spike Lee ... and it was pretty hilarious.

Lee and Rapaport had been feuding for months over how to fix the problems in New York City -- Rapaport called Lee a "s**t stain" and Lee said Michael was "stupid."

But Michael recently told HuffPost Live they spoke on the phone and squashed the beef for good.

In fact, when we saw Michael out in NYC Monday ... he was PRAISING Spike as the biggest Knicks fan in the world -- even bigger than he is -- but dropped one last zinger at the famous director.

Ask and ye shall receive ... if you're Katy Perry and your dream is to have a giant pizza-themed birthday celebration.

The pop diva turns 30 in a few days and tweeted that all she wanted was her name on the marquee of the Shakey's Pizza parlor on Santa Monica Blvd. in Los Angeles.

The chain obliged Monday morning ... and a rep for the company tells us they're taking it a step further -- they plan on posting a b-day message on the marquee of all their California locations.

We're told the pizza spot also wants to name a pie after Katy, and throw her a birthday bash -- but so far, there's no firm plan in place with Team Perry.

Kylie Jenner and Tyga still deny they're a couple -- smart since she's 17 and he's 24 -- but that's not stopping them from flying together all over Europe, where it just so happens the age of consent would be more favorable for them to ... y'know.

Tyga and Kylie were spotted together at England's Gatwick Airport on Friday ... then traveled on to Bordeaux, France and Geneva, Switzerland ... before landing in Athens, Greece where Tyga had a gig Sunday night.

Seems odd that Kylie would go on tour with Tyga -- if they're just friends -- but then we noticed the age of consent for sex in those countries:

England -- 16
France -- 15
Switzerland -- 16
Greece -- 15

The consent age is 18 under Federal and California law. Of course, there's still no evidence they're banging -- and Tyga's been adamant they're NOT -- but ya gotta wonder if they read up on international laws before departing ... just in case.

Ronda Rousey hit up a local wrestling show Friday night in Reseda ... but it's what she did during one of the matches that has people talking.

The UFC women's bantamweight champ attended a Pro Wrestling Guerilla event ... and during one of the matches she was prompted by a wrestler named Tommaso Ciampa to chop his opponent's chest.

After some audience urging, Ronda reeled back and lit up the guy's chest -- the place went nuts.

Ronda rolled to the event with a few members of her posse "The 4 Horsewomen" -- MMA fighters Shayna Baszler and Jessamyn Duke -- and the whole group had no problem taking pics with wrestling fans all night.

Bruce Jenner is dating one of Kris Jenner's best friends ... TMZ has confirmed.

Our Jenner sources tell TMZ ... Bruce has hooked up with Ronda Kamihira ... a divorced, 51-year-old mother of 2.

We're told Kris is "extremely upset" that Bruce is dating Ronda, and -- as one source puts it -- "It really stings because Ronda never told Kris she started seeing Bruce."

And get this ... for years Ronda and the Jenners have been neighbors in Hidden Hills, CA, even spending holidays at each other's homes.

The daughters on both sides have become friends. Ronda's daughter, Spencer, took this pic with Kendall and posted it on her Twitter page.

A Jenner source tells us the talk within the family was that Ronda was weirdly becoming "Kris' single white female." The source says Ronda mimicked Kris right down to her hair.

This pic was taken at Staples Center in L.A., when Bruce and Ronda went to Elton John's concert.

And here's how awkward this is ... the pic (above) shows Ronda and Kris on vacation together in Dubai just a few years back.

Paul George has a new lady in his life ... his 5-month-old daughter Olivia ... who he met for the first time Thursday -- and now TMZ Sports has learned the NBA star is gunning for joint custody of the child.

As we previously reported, George swore that he would "do the right thing" if a paternity test proved he fathered a child with a woman named "Daniella" who he had a relationship with in 2013.

Now, we've learned George is convinced he IS the daddy ... and his attorney is currently in the process of hammering out a joint custody arrangement with the mom.

Paul's attorney tells TMZ Sports ... "Paul has always wanted to accept responsibility and play a role in his daughter’s life -- and wanted to make sure it was handled properly through the legal system."

We know Shaquille O'Neal rolls big, and now his pet fish do too -- in a massive $50,000 aquarium he had custom built into a freakin' big rig truck! Yeah, tropical fish can be badass.

Shaq posted a pic of his giant self yesterday next to his new baby -- a 3,000 pound tank complete with the Superman logo (a Shaq fave). It's framed by the cab of a tractor trailer ... which would dwarf any other fish tank owner.

The hosts of the Animal Planet show "Tanked" -- Wayde King and Brett Raymer -- designed and built the saltwater pad which houses dozens of exotic species like Miniature Groupers, Clown Triggers, Mappa Puffers, and even Dragon Eels!

Wayde and Brett told us it was one of the most unique projects they've ever worked on -- especially because hey had to load in the Dragon Eels ... which they called "a bit aggressive."

3:45 PM PT -- Misty's uncle says they've confirmed it's her body.

The "August: Osage County" star who's been missing since last week may have been found dead ... according to family members.

Misty Upham's family tells TMZ ... one of their search teams found a body in a ravine about an hour ago. They have not been able to reach the body yet because of the steep terrain ... but searchers believe it looks like Misty.

We're told the search team included family, friends and other members of the Native American community around Auburn, WA. They contacted police ... who are now sending officers to help retrieve the body.

As we reported ... Misty's Dad feared she had committed suicide when she went missing after going to visit friends. He says she'd recently changed the meds she was taking to control erratic behavior.

Story developing ...

Sarah Jessica Parker's klepto makeup artist was just busted for stealing once again ... this time she allegedly jacked 3 different purses over the course of 6 months -- worth TONS of money!

Leslie Lopez -- who was caught shoplifting twice in Norway back in 2012 -- has been the focus of a police investigation ... over 3 designer handbags from Saks Fifth Avenue in Florida that went missing.

The Bal Harbour PD says Lopez allegedly swooped a Fendi handbag in January worth $2,750 ... then in April she allegedly swooped a Louis Vuitton purse worth the same amount -- and walked out of the store with the purse draped over her shoulder.

Same goes for a Louis Vuitton purse in June worth $3,800 ... only that time she concealed the item inside a shopping bag before walking out.

Leslie turned herself into authorities this week and was charged with 3 counts of grand theft.

Sources close to Leslie tell us she voluntarily went to police because she wanted to set things right by paying for the stolen merch. We're told Leslie has been depressed and on a bunch of meds since her mother's death last year -- but recently she's been cleaning up her act, and as part of that process she surrendered to cops.

In case you forgot ... SJP's longtime makeup artist was fined in Norway for stealing a pair of sunglasses -- she also took some lipstick -- but Leslie INSISTED she had been set up.

Stephen Collins is now under investigation by a third law enforcement agency for allegedly molesting and/or exposing himself to young girls ... TMZ has confirmed ... and the victim herself is the one who came forward to make the complaint.

Law enforcement sources tell TMZ ... the woman was 13 at the time and she has now gone to law investigators with her allegations.

Our sources say ... the incident involves a relative of a neighbor when Collins lived on Havenhurst Drive in West Hollywood during the summer of 1983.

Collins confesses to exposing himself to the girl on the audio tape posted on TMZ last week. We redacted her name and address.

Collins also says on the audio ... he went back to the victim and "made amends" years later.

We're told the New York PD referred the matter to the L.A. County Sheriff's Dept. because the incident occurred in that jurisdiction.

We're told the Sheriff's Dept. investigation centers around indecent exposure and the crime of annoying or molesting a child. We've learned Collins is listed as "suspect."

Snoop Dogg has declared a truce with Iggy Azalea ... officially squashing the beef after just one phone convo with T.I.

Snoop just posted a video mea culpa where he says, "No more bad talk. I apologize. I won't do it again." He says the peace treaty was engineered by Iggy's manager ... T.I.

Snoop never mentions Iggy by name during the brief message -- but Iggy immediately accepted the apology on Twitter.

With the war of words so heated, you gotta wonder what T.I. said to cool things off so quickly. We spoke to Snoop and he would only say ... "Tip called me, it's over. Got a lot of love for cuz, so I let it go! Too much money on my mind to worry bout a biiiiiych."

L.A. Clippers star Matt Barnes has separated from his reality star wife Gloria Govan ... TMZ Sports has learned -- and sources close to the couple tell us it's all over "trust issues."

Barnes and Govan were married back in 2012 -- and have 5-year-old twin boys together.

Sources connected to the couple tell us Matt and "Basketball Wives: LA" star Gloria have been separated for about 6 weeks.

We're told they're still technically living in the same house -- but it's just temporary and it's just a matter of time before one of them moves out and they start the divorce process.

Maybe one of the biggest signs things were going south ... Matt hasn't posted a picture of Gloria on Instagram in months. And we haven't been able to find a picture of Gloria wearing her wedding ring since late-August.

Boxing legend Leon Spinks -- who famously beat Muhammad Ali in 1978 -- is hospitalized in Las Vegas, TMZ Sports has learned ... and his friends say the situation is very serious.

Sources connected to the 61-year-old Olympic gold medal winner tell us ... Spinks underwent surgery this weekend for abdominal problems (his 2nd surgery for the issue) and there were complications during the surgery.

We're told the situation seemed dire at first ... but Spinks seems to be doing better.

Leon's wife issued a statement saying, "It's going to be a long road ahead, but he's strong and he's starting to recover."

Leon's good friend Tony Orlando -- the famous singer -- is asking people to "Please pray for my friend Leon Spinks" ... and said the boxer is "facing the greatest fight of his life."