Renee looked gorgeous as she sat front row at the Carolina Herrera fashion show on Sept. 12, the morning after her ex had a romantic dinner date with J.Lo!

Renee Zellweger and Jennifer Lopez are sharpening their claws for what could be one of Fashion Week‘s biggest cat fights! Renee, 42, appeared all smiles just hours after news broke that her ex-boyfriend Bradley Cooper was spotted at NYC’s swanky Per Se restaurant on the night of Sept. 11. Renee is big lover of designer Carolina Herrera‘s fabulous gowns, most recently she donned one of her creations to the 2011 Met Ball.We told you that Bradley and J.Lo dined for over two hours at the Midtown hot spot that requires reservations to be made weeks in advance. Not to mention bottles of wine start at $90 a bottle! We’re sure Renee isn’t thrilled, and since J.Lo is a lover of fashion, these two are bound to run into each other!

Do you think Renee’s best revenge should be looking fabulous and really happy?

— Chloe Melas