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Michelle Trachtenberg's cause of death is official ... with NYC authorities saying she died from complications of diabetes.

The actress -- who passed away in February -- died from "complications of diabetes mellitus" according to the medical examiner, who cited lab results. Diabetes mellitus is the more technical name for diabetes. It doesn't denote whether Michelle had type 1 or type 2.

The ME is classifying Michelle's death as "natural" ... meaning the investigation into Michelle's death is pretty much closed at this point.

The brains behind the world’s first-ever sperm race are spilling the tea to TMZ -- disclosing their donors are on one wild ride getting prepared for the big race day.

Eric Zhu and his Sperm Racing startup crew broke it down on "TMZ Live" Wednesday, telling us sperm is a key biomarker for male health, so they've turned 2 young donors -- one from UCLA and the other from USC -- into full-blown sperm-athletes, giving them thousands of dollars per week to help them fine-tune their swimmers for race day glory.

The tech teen dream team’s swimming in strategy -- giving us every juicy detail of the donors’ prep, from tailor-made vitamins to pineapple-juice chugging. This isn’t a half-baked stunt -- it’s a well-seeded plan.

Sydney Sweeney was finally walking down the aisle in full bridal glam, ready to lock in her fairy-tale ending and say "I do"... PSYCH!

Jonathan Davino might wanna shield his eyes real quick -- 'cause his ex-fiancée Sydney was serving ultimate blushing bride vibes on the "Euphoria" S3 set, rocking a jaw-dropping strapless white dress, a classic veil, and killer white heels.

Sydney looked in a great mood, trading in real-life heartbreak for a full-blown "Euphoria" fairy tale -- possibly to marry Nate, AKA Jacob Elordi. It’s giving poetic justice ... because if she didn’t get the wedding IRL, she’s damn well getting one on HBO.

Eric Dane is doing exactly what he said he would after announcing he has ALS ... he's getting out and about, not letting the diagnosis slow his lifestyle.

The "Euphoria" and "Grey's Anatomy" star was looking good while visiting a friend in L.A., and his Sunday outing came just 2 days after revealing he's now battling amyotrophic lateral sclerosis -- which is commonly known as Lou Gehrig's disease.

Eric seemed a little thinner than we're used to seeing him, but was still flaunting his McSteamy good looks in an off-white sweater, khakis and zaddy-approved eyewear.

"The White Lotus" star Aimee Lou Wood says she's "had apologies from 'SNL'" for a skit making fun of her teeth -- but we've learned the sketch comedy show has done no such thing, although the staff was very fond of her on set.

Sources with direct knowledge tell TMZ ... "Saturday Night Live" did not reach out to Aimee with a formal apology.

We're told Aimee may have spoken to someone she knows on the show and they may have apologized, but no such apology came down from 'SNL' in any official or formal capacity.

Cuban-American actor William Levy is feeling the heat in Miami, but it's not the weather he's dealing with ... he was arrested Monday night for disorderly intoxication in a public place causing disturbance and trespassing.

Levy was booked in Broward County Jail. WPLG-TV reports he appeared in court Tuesday afternoon, where a judge granted him a $500 bond.

Levy was arrested in Weston, in the Miami metro area. According to the Broward County Sheriff's Office, deputies responded to a report of a disturbance at Baires Grill on Monday night at about 10:10. The arresting deputy reports Levy was allegedly "highly intoxicated and causing a disturbance inside the restaurant." In the presence of the deputy, the manager told William not to return to the business ... and WL then allegedly ignored multiple verbal commands by the deputy to leave the property. He was promptly arrested and booked.

"The White Lotus" star Aimee Lou Wood looks like she's still bothered by a 'SNL' skit making fun of her teeth ... because she was an emotional wreck in public.

Ya gotta see these photos and video of Aimee ... she was practically in tears Monday in London, the day after ripping the 'SNL' skit as "mean and unfunny."

Aimee's 'White Lotus' character is relentlessly mocked on the 'SNL' parody ... there are massive fake teeth and a bad British accent ... and it looks like she's still upset with her portrayal.

The "American Idol" crew had aloha-t of fun in Hawaii, and we've got the behind-the-scenes shots just for you!

From the stage to the beach, the 'Idol' judges -- Lionel Richie, Carrie Underwood and Luke Bryan -- took their duties to the shore, and they took obligations seriously!!!

Ryan Seacrest joined Lionel and Luke on the sand for a round of push-ups -- with Underwood acting as their drill sergeant!

American actor Daniel Booko was 27 years old when he played Cort -- the clumsy and good-looking intern for iCarly -- on Nickelodeon's sitcom "iCarly" back in 2011.

Daniel Booko was part of an ensemble cast including Miranda Cosgrove as the kind teenager who loves her friends, family and her web show, Carly, Jennette McCurdy as Carly's sarcastic bestie, Sam, who's a tad lazy and Nathan Kress as the show's camera operator and straight-A student, Freddie.

Years later, Daniel married Miss USA 2014, Nia Sanchez, and the two are on Bravo's reality show "The Valley."

Aimee Lou Wood gets satire ... but, a recent joke about her on "Saturday Night Live" clearly stung -- 'cause she called the parody of her straight-up mean.

The actress weighed in on the long-running comedy show's parody of "The White Lotus," called "The White POTUS" ... a political skewering of the popular HBO show, the third season of which just aired.

ICYMI ... different political figures are depicted -- including Jon Hamm playing Health and Human Services Secretary Robert F. Kennedy Jr., shown to be dating a character based on Wood.

Jean Marsh -- a longtime British star who appeared in several hit '80s movies -- has passed away ... TMZ has confirmed.

Lesley Duff -- Marsh's longtime agent -- tells us Jean did indeed pass away Sunday while also sharing a statement from Michael Lindsay-Hogg -- a pioneer in the music video industry and pal of Marsh's -- revealing she passed at her home in London Sunday due to complications of dementia.

Lindsay-Hogg says he and Marsh were close for 60 years, speaking almost daily over the last 40 ... adding she was a wise, funny, pretty, kind person -- talented as both an actress and writer -- who was loved by everyone who met her.

Marsh began her screen career in the late 1940s ... appearing in a series of uncredited roles in smaller shows before grabbing bit parts on "The Twilight Zone" and "I Spy" as well as a small role in the Elizabeth Taylor-led flick "Cleopatra."

Mickey Rourke faced off with another housemate on "Celebrity Big Brother" before his early exit ... and, while the confrontation didn't come to blows, it looks like it got very close.

The veteran actor -- who we already knew had been booted from 'CBB' for continually using abusive language and behaving inappropriately toward his fellow housemates -- appeared in the episode that aired Sunday, featuring a pirate-themed quest with his fellow contestants.

During a challenge where the group was forced to reveal hard truths about one another in order to open treasure chests ... Chris Hughes -- a reality television star and pro soccer player -- stared down Mickey, who didn't appreciate the look one bit.

Lizzo seems to be feeling "Good as Hell" about her 'SNL' performance Saturday night ... which included a jab at President Donald Trump's polarizing tariff plans.

The singer -- who advocated for Kamala Harris' run for the White House -- performed a medley of "Love in Real Life" and "Still Bad" on the sketch comedy series while proudly sporting a black crop top with red lettering reading "TARIFFIED."

There's no doubt Lizzo's shirt references Trump's tariffs, which include a newly announced 145% rate on Chinese imports that stunned -- and terrified -- many Americans.

"Saturday Night Live" spoofed the "White Lotus" after an absolutely shocking season finale -- but with a Donald Trump "White Potus" twist as his unclear tariff rollout even has some of his supporters skeptical.

The pre-taped sketch on last night's 'SNL' starts off with Chloe Fineman portraying Melania Trump, but with a southern accent that mirrors Parker Posey's "White Lotus" character, Victoria Ratliff.

The sketch has Melania trying to get her husband's attention, who seems to be off in another world as she gets ready for dinner. James Austin Johnson's Trump takes the spot of Jason Isaacs’ Timothy Ratliff -- whose family is plagued with financial woes throughout  "White Lotus" Season 3.

Mickey Rourke is officially off "Celebrity Big Brother" ... 'cause the show just announced the actors departure -- citing his language and calling his behavior inappropriate.

The 'CBB' team released a statement Saturday ... announcing Mickey and producers mutually agreed to part ways after the veteran actor had "a discussion with Big Brother regarding further use of inappropriate language and instances of unacceptable behaviour."

According to "Celebrity Big Brother," Mickey has used inappropriate language in other instances since using a gay slur on the show ... and, it all spiraled into an explosive disagreement on Saturday.

Jenna Johnson's dancing through another year around the sun ... turning 31 years old Saturday -- and, we've got her hottest shots to celebrate the day.

The "Dancing with the Stars" pro -- who actually met her husband Valentin Chmerkovskiy on the show years ago -- is ready for any weather ... stunning in both a bikini and a flowing dress when the sun's shining.

Sundress season is basically year-round in Los Angeles, and Jenna's always ready to feel the breeze whip through ensembles like this white outfit dotted with strawberries.