EXCLUSIVE PHOTOS - Is Paris Hilton Engaged?!

A brunette Paris Hilton sported an unusually large rock on her left ring finger the other day at The Factory restaurant in West Hollywood and we wanna know! Did boyfriend Chris Zylka propose???!!!

We certainly hope so because this adorable couple looks like the real deal.The duo was caught locking lips in Cannes two weeks ago and we're betting these two have decided to get hitched.