Demi Moore's A-List Birthday Bash for Ashton Kutcher  —  How does Ashton Kutcher celebrate his 30th birthday?  —  With a star-studded bash - featuring Madonna, Kate Hudson and his wife's ex husband Bruce Willis!  —  His wife Demi Moore threw Kutcher a birthday dinner at Gemma restaurant in NYC's Bowery Hotel last night.

Jesse Metcalfe Knocked on His Ass!!  —  It all went down outside the Nicole Khristine Jewelry launch at Boulevard 3 nightclub, after Jesse allegedly said something that pissed off a musclebound friend of actress Taryn Manning.  The guy suddenly unleashed a ferocious blow that sent Metcalfe crumbling to the floor.

Coroner: Renfro Overdosed on Heroin  —  In a sad conclusion to a tragic life, the Los Angeles County Coroner confirmed that actor Brad Renfro died from an accidental overdose of heroin.  —  The cause of death was ruled “acute heroin/morphine intoxication,” and the drugs were injected, according to the coroner's office.

Brit Attempts An Inside-Out Makeover  —  It's been all quiet on the western front for roughly 36 hours since Britney Spears returned to her Beverly Hills mansion on Wednesday night.  But word from the inside is that the emotionally unstable pop star is trying to get her act together — and is starting with her hair first.

Amy and Ozzy  —  HERE'S the latest bizarre chapter in the life of drug-addled Amy Winehouse — she's moving in with Ozzy and Sharon Osbourne and their daughter, Kelly, in the guesthouse of their estate outside London.  The stick-figured “Rehab” singer, just out of rehab herself, is a longtime pal of Kelly, also a former rehabber.

Frances Bean Cobain: 'I'm Not My Parents'  —  Clay Aiken, move over.  There's a new Broadway baby on the horizon.  —  Frances Bean Cobain, 15, the daughter of Courtney Love and late grunge legend Kurt Cobain, is headlining as the star of Evita, Grease and Beauty and the Beast …

Charlize Theron Gets Feisty - and Tipsy! - at Harvard  —  Charlize Theron  —  She may have dropped out of high school, but Charlize Theron still went to Harvard - for the day, at least.  —  The actress headed to the esteemed university in Cambridge, Mass., Thursday to receive their Hasty Pudding Woman of the Year award.

V-Day D-day for J. Lo?  —  Plus: Angelina Jolie dodges pregnancy rumors; Halle Berry's baby crème  —  If all goes according to plan, Jennifer Lopez will be receiving two special valentines: namely, her twin babies, who are due on Thursday, Feb. 14.  —  While this date has been bandied …

THE RIGHT MOVES  —  Katharine McPhee, 23, gets down on the dance floor with her new husband, producer Nick Cokas, 43, during their Feb. 2 wedding reception at St. Viviana's in Los Angeles.  The couple tied the knot earlier at the Beverly Hills Presbyterian Church before 305 guests (including McPhee's pal Rumer Willis).

Paris' New Rex Tape  —  Paris Hilton added another one to her trail of men last night — after hooking up with former MTV VJ Simon Rex.  —  The duo, who both have a history involving some scandalous amateur porn, were caught getting mighty close in the back of Hilton's SUV last night …

Kat Von D — Next Mel Gibson?  —  Upon being fired from “Miami Ink” last year, tattoo artist Kat Von D allegedly signed a photograph addressed to her former boss, Ami James, and drew a swastika and a flaming Star of David on it.  Subtle, no?  —  TMZ has obtained the photograph in question …

Ashlee Simpson on Jessica's Beau Tony Romo: “I Love Him”  —  Tony Romo has gotten flak for his romance with Jessica Simpson — Jessica jinx, anyone? — but the couple have one diehard supporter: Jessica's younger sister Ashlee.  —  “I love him!” the singer, 23, gushed to Usmagazine.com …

EXCLUSIVE: Full House's Jodie Sweetin Not Naming Baby “After Fruits”  —  Don't expect Jodie Sweetin to go off the deep end when it comes to naming her baby girl, due this summer.  —  “We're not naming her after any fruits or electronic devices or anything like that.

EXCLUSIVE: Teen Vogue on Lauren Conrad, Whitney Port: “It Was Time for Them to Move On”  —  Despite reports, Lauren Conrad and Whitney Port weren't given the pink slip by Teen Vogue.  —  “I just thought it was time for them to try something new,” Editor-In-Chief Amy Astley told Usmagazine.com …

Lance Bass: Justin Timberlake “Could Really Help” Britney Spears  —  Lance Bass thinks pal Justin Timberlake should help Britney Spears through her current struggle.  —  “Justin could really help,” Bass told Usmagazine.com.  —  Bass thinks his former 'NSYNC bandmate …