Carey Mulligan Not Taking Shia LaBeouf to Oscars

Oscar nominated actress says she won't walk the carpet with her actor beau on Sunday...plus, her costar's advice to her on how to handle the big day!

Adorable duo Carey Mulligan and Shia LaBeouf may be puckering up in public, but she told me she won't be walking the red carpet with him on Sunday at the Oscars.

So who will she take along on her big night?

"My mom, my dad and my brother," she said today at a luncheon for her hosted by Sally Morrison and the Diamond Information Center.

Her An Education costar, Peter Sarsgaard, also hit the Chateau Marmont to fete Carey and shared what advice he's given the Oscar nominee on how to handle the whirlwind of red carpet events...

"Don't drink a lot...not just the night before, but in between events, because you're going to drink a lot after each one!" he told me. "So save your liver."

Duly noted! Maybe she should pass that pearl of wisdom along to Shia too?

Also on hand at the afternoon soiree for the British actress: Nikki Reed, Ginnifer Goodwin and Cat Deeley.