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Michelle Trachtenberg was one of those cases of "gone too soon" ... and we're marking what would have been her 40th birthday by sharing a gallery of photos from throughout her career.

The performer started off her professional journey when she was just a kid, and her star really shone during her multi-season run on "Buffy the Vampire Slayer."

In February, she was found dead in her New York City apartment, and several of her past costars paid tribute to the late actress.

Jennifer Lopez is dripping in red-hot chic while giving New York City a fiery fashion moment.

The superstar was spotted Friday filming scenes for "The Last Mrs. Parrish" in Midtown Manhattan, and let’s just say ... the streets never stood a chance.

Decked out in a striking crimson coat, stilettos, an oversized black hat & shades ... J Lo turned the sidewalk into a full-blown catwalk.

Tom Holland’s back, swinging like his old self ... 'cause we have the first sighting on the "Spider-Man: Brand New Day" set since that scary concussion sent him to the ER.

Peep the clip -- Tom was fully back in action in London Thursday, diving into a major scene while the crew watched him web-sling back to form.

No Spidey suit yet, but Tom was all in during the rehearsal -- script in hand, scheming the scene, chasing that perfect web-slinging moment.

Jennifer Lopez says starring in a musical was a dream come true ... and now it could be a double whammy, 'cause "Kiss of the Spider Woman" might just land her an Oscar nod --finally!

It’s a stacked weekend at the movies, and Jabeen Waheed’s got you covered with "TMZ Movie Tea" -- and good thing too, 'cause there’s a whole lotta hot new drops, led by J Lo in Bill Condon’s latest flick.

Craving lighter vibes? Enter "Roofman" -- a real-life-inspired crime comedy that honestly doesn’t even need a plot ... 'cause hello, it’s got Channing Tatum. Enough said!

Kylie Jenner is taking a page out of her boyfriend Timothee Chalamet's playbook ... literally ... as she is set to star in Charli XCX's new A24 film "The Moment."

The 'Brat' pop star posted a flashy, seizure-warning teaser video announcing the star-studded cast list ... and among the names announced is none other than the billionaire makeup mogul herself, Kylie -- making this her first-ever role in a feature film.

Charli stars in the film too ... she came up with the original idea, so as to whether she hand-selected Kylie to join the fun -- we'll have to just 'Guess' for now.

Australian actor Jaason Simmons was 43 years old when he played Baz Hogan -- the Australian surfer and Fin's right-hand man -- in the horror sci-fi film "Sharknado" back in 2013.

Simmons joined other actors on set, such as Ian Ziering, Cassie Scerbo and Adrian Bustamante.

Ron Dean, famous for his work on "Risky Business" and "The Breakfast Club," is dead.

The veteran actor died Sunday at a hospital in Chicago ... according to Maggie Neff, Ron's partner of 40 years.

The cause of death is unclear, but Maggie tells us Ron has been battling a long illness.

Accio, pics of Dumbledore! HBO's "Harry Potter" series is underway ... and we have a first look at John Lithgow in full costume.

The 79-year-old Emmy winner looks unrecognizable as the headmaster of Hogwarts, fully disappearing into the role. This show of commitment should calm down any fans who were worried about the professor being played by an American actor ... John has the unenviable task of filling the legendary shoes of his predecessors, the late Richard Harris and Michael Gambon.

As soon as he was announced, John tried to get in front of the inevitable controversy that would surround his casting ... saying, "I will be following the great Michael Gambon. I'm not an Englishman, although I've played one on TV. I remind everyone that I did play Winston Churchill on 'The Crown' and did just fine."

Nicole Kidman just served divorce drama on a silver platter ... striking the American Vogue cover like a woman who needs no man, and wants everyone to know it!

The statuesque actress flexed her frame in Saint Laurent on the cover -- with a spread packed with other big-name fashion -- showing her fully in her element ... though the interviewer admits, they kinda saw the divorce tea brewing mid-chat, even before anyone else did!

Journalist Wendell Steavenson said she held back when she sensed trouble in Nicole’s marriage ... a huge clue came when she asked Kidman about life in her 50s. She said Nicole  wondered aloud, "How many times do you have to be taught that you think you know where your life is going and then it isn’t going in that direction?"

Timothée Chalamet took a razor to his mane ... because he's showing off a new look ... and it's a shaved head!!!

The actor debuted his new hairstyle Tuesday on Instagram Live ... during a promotional spot for his new ping pong movie, "Marty Supreme."

In the footage, Timothée is walking around with his shaved head ... while wearing some "Marty Supreme" merch.

Even though Dwayne Johnson starred in "The Smashing Machine" ... the flick's definitely not smashing anything at the box office.

The sports biopic -- centered around the life of former MMA fighter Mark Kerr -- turned out to have The Rock's lowest-ever film opening, raking in an unremarkable $5.9 million over its opening weekend, according to Deadline.

What's interesting is the movie was actually forecast to bring in a pretty penny with its release, and it was supposed to be one of A24's biggest openings yet.

Dick Van Dyke’s cracking jokes about hitting 100 ... proving he’s still got the charm, even if the candles on the cake are about to hit triple digits.

The legend hit up the Vandy High Tea at Vandy Manor in Malibu this weekend ... where he joked about becoming a centenarian on December 13 -- quipping it’d be hilarious if he didn’t quite make it!

Classic Dick, still sharp with the humor ... later admitting if he’d known he’d stick around this long, he might’ve taken better care of himself.

It looks like Zelda Williams is perfectly happy with photos and home videos of her late father Robin Williams ... because she just publicly objected to fans sending her A.I.-generated clips of her dad.

The director shared a set of messages on her Instagram Story on Monday to let her followers know she's fed up with receiving the clips ... and she pointed out the "Mrs. Doubtfire" star would not have approved of them, according to Variety.

FYI ... Robin -- who shared Zelda with his ex-wife Marsha Williams -- died by suicide at his home in California in 2014.

Looks like Ben Affleck made his exit stage left early ... leaving Jennifer Lopez to shine solo as the night raged on after their "Kiss of the Spider Woman" reunion.

Video doesn’t lie ... J Lo was in full social butterfly mode at the NYC afterparty Monday ... laughing it up and working the room, all with zero Ben in sight.

Now, Ben doesn’t pop up in these shots ... but hey, he could’ve been lurking elsewhere at the bash -- so we can’t say for sure he was a no-show at the after party.

Jonah Hill was snapped hard at work Monday ... with a new slimmed-down look!

One of America's favorite funny guys was spotted sporting a shaggy hairdo and svelte figure while calling the shots on the set of his upcoming movie, "Cut Off," costarring Kristen Wiig.

The hilarious duo play a pair of rich twins who get cut off from their parents. Jonah, who cowrote the film, is also directing.

Ben Affleck and Jen Lopez are back together ... at least for one night only ... but it's strictly business.

The famous exes reunited Monday for a movie premiere in New York City ... showing up for the first screening of "Kiss of the Spider Woman."

Jen stars in the musical and Ben serves as an executive producer. Artist Equity, the production company he shares with Matt Damon, helped produce the flick.