Birthdays

Mariah Carey, Nick Cannon and their twins, Morocco and Monroe, looked like one happy family celebrating their 6th birthdays at the Happiest Place On Earth on Sunday, but it didn't come cheap.

We're told Nick and Mariah pulled out all the stops for the twins' big day, dropping 5 figures. Sounds expensive but they had a huge group of friends join them.

The twins got 2 cakes ... one Minnie and one Mickey. Gifts included kid-sized whips, computer stuff and a bunch of jewelry.

Not surprising they celebrated at Disneyland. The place is special to Mariah and Nick ... it's where they renewed their vows.

Al Pacino is feeling great at 77, but apparently his hot girlfriend's boob feels even better.

Al was down in Mexico Tuesday celebrating his birthday with gf Lucila Sola ... who's just about 40 years younger than Al. Looks like he's totally tuned in to her.

During a stroll down the beach, Al snuck in a feel -- or maybe he was trying to regain his balance. Hard to say.

Whatever the case ... Al looks great, Lucila does too. Feliz cumpleaños, bud!

Hard to tell which birthday gift Killer Mike enjoyed more ... the new gold chain around his neck or the $10k worth of weed he scored. We'll go with the weed.

Mike's one of the lucky guys whose bday falls on 4/20 -- appropriate for so many reasons -- plus, this year he turned 42. Hence, his massive marijuana-themed bash in Atlanta.

Guests included OutKast's Big Boi, Sleepy Brown, Big K.R.I.T. and Pastor Troy, who all got to snack on a wide range of edibles. Mike also got a car as a gift, but again -- he definitely seemed to be enjoying the huge joints more than anything else.

Kourtney Kardashian is scoring some serious best mom eveeeer points with her kids by taking them to the Happiest Place on Earth on HER birthday.

Kourt turned 38 Tuesday and got the VIP treatment at Disneyland. Scott was there too, to help control the gang, which included cuz North West.

Kourtney is a ride or die chick, literally ... in the front row for all the Disney rides. We're guessing they didn't hit up Space Mountain because the kids aren't tall enough.

HBD!

Victoria Beckham has never been big on smiling for anything, not even when a pack of strangers sing 'Happy Birthday' for her.

Posh Spice turned 43 on Monday and got a serenade from photogs when she arrived at LAX. It was a sweet gesture, and Vicky seemed like she was gonna be into it. You gotta see her primp for the big moment.

But once the singing started, well ... let's just say she doesn't seem impressed.

We think she'd say her daughter, Harper, did it better.

Kristen Stewart didn't quite step out in her birthday suit on her born day ... but still left little to the imagination.

She was out with her gf, Stella Maxwell, in New Orleans rocking a crop top -- no bra -- and short shorts. Stella wore pretty much the same kinda outfit.

Paris Jackson's birthday looked like a typical teen's Monday -- eating Mickey D's, smoking cigs, hanging with friends -- which is a full 180 from when she was a kid.

She celebrated 19 by chillin' outside a friend's apartment ... possibly the most casual party ever for Hollywood royalty.

Can't blame Paris though for toning things down. Her childhood was nothing short of a media circus ... hidden behind veils, paparazzi and bodyguards at every turn.

She's earned some normalcy. Happy 19th, PJ!

Dennis Quaid got his birthday celebration started early with a serious check of the ole ticker involving his girlfriend ... and a roller coaster.

Dennis and model Santa Auzina -- who's 30, btw -- hit up Six Flags Magic Mountain over the weekend and strapped themselves in for high-speed fun, and a lot of screaming.

He'll turn 63 on Sunday.

If the ride doesn't make him feel young, something tells us Santa will.

Floyd Mayweather channeled his inner-Bob Barker for his son's 16th birthday party ... 'cause he gave away A BRAND NEW CAR!!!!!

The guest of honor was Zion Mayweather -- who was celebrated with a live performance from Young Thug while go-go dancers busted out bottle service (non-alcoholic, we think)!!

There was 360 degree photo booth, pool tables and one of those "money machines" -- where you stand in the glass case and collect all the bills you can grab in 30 seconds while a fan blows the cash around.

Oh, and Zion also got a brand new Mercedes-Benz ... so, yeah ... he's happy!

Fetty Wap's moving past his robbery by spending quality time with his baby girl, who just turned 1 -- and whose best present didn't cost a dime.

We got Fetty Saturday night at Lure, and asked him about 1-year-old Khari's birthday party this weekend, and what kind of gifts she got.

Not only did he come up with the perfect answer, he also included some props to Masika, Khari's mom.

#SmartDad

Lady Gaga stepped deeper into her dirty 30s by cleaning up real good -- dressing to the nines and looking chic for her 31st birthday bash.

Gaga headed to dinner at Gjelina in Venice Tuesday for the star-studded event.

Elton John and Johnny Depp joined in ... even if a little underdressed compared to the bday girl.

"Cash Me Outside" girl Danielle Bregoli celebrated a big one Sunday night ... she just turned 14, and she says Dr. Phil's an "asshole" for not wishing her happy birthday.

Danielle has just about exhausted her 15 minutes, but there's no evidence her time is up. Quite the opposite, she just made a deal for a TV show and she dined at old line Dan Tana's in WeHo.

Elton John turned 70 over the weekend ... holy crap.

As you might imagine, Sir Elton's birthday party Saturday night drew a HUGE celeb crowd at Red Studios Hollywood, as well as some kick-ass performances.

Stevie Wonder played ... so did Lady Gaga. Meanwhile the crowd was full of stars like Katy Perry, Neil Patrick Harris, Rob Lowe, Kelly and Sharon Osbourne, James Corden, Jon Hamm, Jennifer Tilly, David Foster, Dakota Johnson, Matthew Morrison and Ryan Phillippe.

Even at 70 ... Elton's still standing ... and playing.

Bow Wow celebrated his big 3-0 two weeks ago but that hasn't stopped his party train from rolling into strip club after strip club with stacks to blow.

Bow Wow's latest stop was Club Onyx in Dallas Wednesday. It was thrown together last minute but Bow Wow still managed to shell out over $15k on the dance floor and even got a FaceTime call from Snoop!

You'd think 9 parties deep into celebrating his birthday he'd be done, but he's got 2 more coming up this weekend.

Robin Thicke made sure his 40th birthday was literally fun for the whole family -- adults and his 6-year-old son alike.

Robin hosted a luau-themed bash at his Malibu pad Sunday, and Julian was in the thick of it with some cousins and friends there too.

The adult guests included Adrien Brody, Angelica Bridges, Russell Simmons, Orlando Bloom and his son ... and, of course, Robin's gf April Love Geary.

As for the party -- magic show, 2-story water slide, mechanical shark, petting zoo, face painting ... in other words every kid's dream. They had hula dancers too ... fun for kids and adults.

Sources close to Robin tell us he was thinking "family first" when he planned the event.

Paula Patton was not there, but as we reported ... she and Robin are getting close to settling their custody war.

Model Hailey Clauson is all about the plus-size model movement, but only from the sidelines ... based on what she told us about her birthday celebration, anyway.

We got Hailey at LAX -- she turned 22 on Tuesday -- and she made it clear she wouldn't be indulging too much ... due to work. Translation: I don't wanna look fat for a photo shoot!

Still, she's clearly happy hers isn't the only body type killing it in modeling these days.

Bottom line? Hailey's gonna have her cake, and eat it too. Later.