Paris Hilton Nicky Hilton sisters heels dress legs coat

Double trouble!

The Hilton sisters, Paris and Nicky, put on their hottest outfits and dined at Craig's on Melrose last night - de-lish! - and later on the sexy sibs attended a pre-Grammy party at Interscope-Geffen-A&M boss Jimmy Iovine’s house.

X17 photogs also briefly chatted with Princess P outside the restaurant where she told us she's "very excited" for her birthday this week. Can you believe Paris is turning 30? She doesn't look a day over 20!