JEN'S BACKUP PLAN FOR A MAN  —  OPENING her movie on Christmas, the same day her ex-husband's film hits theaters, will be tough for Jennifer Aniston - but it would be much tougher promoting “Marley & Me” if Hollywood's most talked-about single woman didn't have a date.

“Charm School” Chick: Sharon O. Attacked Me  —  The LAPD is investigating an alleged brutal cat fight that went down between Sharon Osbourne and a contestant on the VH1 reality show “Rock of Love: Charm School” who ended up in the hospital.  —  Megan Hauserman claims Sharon Osbourne went ballistic during …

Scarlett: Cosmo ‘Fabricated’ That Interview  —  If you thought the UK Cosmo's interview with Scarlett Johansson where she finally opens up about husband Ryan Reynolds was too good to be true, well that's because it probably was.  The star's rep is hitting back at the magazine over their January cover story …

FIFTH ‘TERMINATOR’ FILM IN THE WORKS  —  McG working with Halcyon on project  —  The Terminator will be back.  —  Halcyon Co. toppers Derek Anderson and Victor Kubicek are developing a fifth instalment of the man-vs.-machine franchise.  —  Helmer McG, who directed the upcoming fourth pic …

Lindsay and Sam's Whirlwind 14 Hours in Miami  —  In what may have been one of the shortest Miami stays on record for Lindsay Lohan, the 22-year-old actress joined girlfriend Samantha Ronson last night at Miami's downtown club Karu & Y. The couple flew in late Saturday afternoon so Ronson could spin at the late-night boite.

Mad Men's Christina Hendricks Gets Engaged  —  Christina Hendricks, 33 - who plays the bombshell head secretary on AMC's Emmy-winning Mad Men - is engaged to actor Geoffrey Arend, her rep tells PEOPLE exclusively.  —  Arend, 30, plays an ad man on TNT's upcoming drama Trust Me, which premieres in January.

Aubrey O'Day ‘Out’ as a Lesbian?  —  LOS ANGELES — Former “Danity Kane” diva Aubrey O'Day wasn't skilled enough for Diddy, but it seems she has become pretty skilled at sneaking her friends inside hot Hollywood parties.  —  Miss O'Day attended the Zen Green Tea Liqueur launch in Hollywood …

Taylor Swift's Birthday Splurge?  S'mores!  —  Who needs hot Hollywood clubs?  Taylor Swift's birthday bash Saturday was a low-key, homemade affair.  —  The star celebrated her 19th surrounded by family and friends - including all the members of her band - at her home in Hendersonville …

Amy Poehler Says Farewell to SNL  —  It's no joke: Amy Poehler officially left Saturday Night Live over the weekend.  —  “This is my last show,” Poehler announced from her “Weekend Update” anchor desk.  “Being able to do over 140 shows with my friends and my family has been a dream come true.

KNOCKER BLOCKERS  —  GIANTS ASK STACKED FAN TO COVER UP  —  MAYBE she should have just carried a loaded firearm into Giants Stadium.  —  Over 30 years, Sondra Fortunato has become the unofficial mascot of her favorite NFL team, delighting and annoying fans at Giants home games with her bodacious physique …

EXCLUSIVE: ‘HEY HEY HEY’ BRITNEY'S ON STAGE  —  THIS JUST IN: We have received exclusive pics of Britney performing on the Japanese variety show Hey! … We have WAY more photos of Britney coming our way.  So check back soon!  —  Meriah, Britney's Lead Bitch