Best Celebrity Pictures Week of Dec. 31, 2012

Stars spent the holidays in bikinis on tropical beaches, sharing PDA, and ringing in 2013 across the country. Reese Witherspoon slipped into a swimsuit to enjoy the beach with husband Jim Toth and baby Tennessee in Hawaii, while Jay-Z celebrated the new year on stage with Chris Martin and Coldplay in Brooklyn, NY. In Cabo, Jennifer Aniston wore a skimpy two-piece to lounge poolside with fiancé Justin Theroux, and a pregnant Jenna Dewan planted a passionate kiss on husband Channing Tatum on the beach in St. Bart's.

Much more excitement went down with the stars this week. Click through the rest of the hot holiday snaps!