Exclusive: Hayden Panettiere Secretly Engaged to Wladimir Klitschko!  —  Wladimir Klitschko and Hayden Panettiere  —  Hayden Panettiere and boxer Wladimir Klitschko are going the distance during round 2!  The Nashville star, who reconciled with her Ukrainian boyfriend in January …

Jon Hamm Tired of Jokes About His ‘Impressive Anatomy’  —  ‘People feel the freedom to create Tumblr accounts about my c**k,’ says actor  —  Jon Hamm has a problem most men would love to have: people all over the world are convinced he has an enormous penis.

Baby Girl on the Way for Jenna Wolfe and Stephanie Gosk  —  Jenna Wolfe is sharing some happy news: not only is she expecting her first child — a girl! — in late August, she's also coming out publicly with her partner, NBC News correspondent Stephanie Gosk.

IN MY FACE!!!  —  Justin Bieber spit in his neighbor's face and threatened to kill him, after the neighbor dared tell the singer he was driving recklessly ... that's exactly what the neighbor told Sheriff's deputies.  —  Law enforcement and neighbors tell TMZ ... Bieber hocked a loogie …

Anderson Cooper Approached For Matt Lauer's ‘Today’ Job  —  Embattled Today anchor Matt Lauer, already the focus of blistering criticism for the ouster of co-anchor Ann Curry and the ratings slide at NBC's morning show, has long been rumored to be on the chopping block …

Kourtney Kardashian's old lover still claims he could be Mason Disick's father  —  Back in 2009-2010, there was some minor drama about Kourtney Kardashian's baby-daddy drama.  Kourtney gave birth to Mason Dash Disick in December 2009 after getting pregnant when she and Scott Disick were kind-of broken up earlier in the year.

Kim Kardashian Wears Three Different Maternity Outfits in One Day: Pictures  —  Which maternity look is best?  Kim Kardashian had a full day of interviews in NYC on Tuesday, March 26 to promote her new film Temptation, which meant a lot of wardrobe changes for the pregnant star.

Sean Penn's Son RAMS Photog — F*** You N***er  —  SEAN PENN'S SON  —  RAMS Photog  —  F*** YOU N***ER  —  EXCLUSIVE  —  **Warning: Video contains graphic and offensive language**  —  Sean Penn's son handled a paparazzo in Beverly Hills today much the way his father used to …

Channing Tatum on George Clooney: 'I'd have sex with him'  —  The ‘White House Down’ actor confesses to having a man crush on Clooney and he isn't Tatum's first.  —  'I've spent time with George Clooney and he's the most interesting man on the planet,' Channing Tatum says.

‘Teen Mom’ Stars Catelynn Lowell & Tyler Baltierra — We Need Couples Therapy  —  We Need Couples Therapy!  —  EXCLUSIVE  —  “Teen Mom” stars Catelynn Lowell and fiancé Tyler Baltierra might not be getting married as soon as you think ... TMZ has learned the duo has joined the new season of “Couples Therapy.”

THE FORMER STAR OF ITV'S PERIOD DRAMA HIT REVEALS WHY SHE SWAPPED DOWNTON ABBEY'S LADY SYBIL FOR LABYRINTH'S ALAIS  —  Jessica Brown Findlay has revealed that she left hit ITV show Downton Abbey because she was scared of discovering it was all she could do.  —  The 23-year-old actress …

How Kate Is Preparing for Baby  —  Her nursery in Apt. 1 A at Kensington Palace won't be move-in ready until the fall, but the Duchess of Cambridge - due in July - has been plenty busy feathering her nest.  —  She's been scouting out decorating supplies, a royal source tells PEOPLE.

Kendall Jenner: “Calling Someone Too Skinny Is the Same Thing as Calling Someone Too Fat”  —  Kendall Jenner has been taking the fashion world by storm since she signed with Wilhelmina Models in January 2010, and during that time, the 17-year-old learned just how harsh the industry can be.

Dorothy Hamill quits “Dancing with the Stars”  —  Gold medals are worth more than any Mirrorball trophy, anyway.  On the Tuesday, March 27 installment of Dancing with the Stars — the first elimination episode of the sixteenth season — legendary Olympic figure skater Dorothy Hamill was the first celebrity to go home.

Jessica & Ashlee Simpson's ‘Very Sweet’ Family Dinner  —  Sisterly love!  —  Jessica and Ashlee Simpson dined at BLT Steak at the Ritz-Carlton in Charlotte, N.C., over the weekend.  —  The sisters were in town to promote Jessica's fashion line at Charlotte's Southpark Mall with the help of her daughter, Maxwell.

Nicki Minaj Rates Herself as an American Idol Judge: “I've Been Spectacular”  —  No one has ever accused Nicki Minaj of being humble.  During a conference call with reporters March 25, the first-time American Idol judge was asked to rate her performance thus far — and, as expected, she gave herself a glowing review.