Paris Hilton celebrates her 30th birthday today! The heiress is part of the long list of stars marking the milestone this year. She already threw a lavish party in LA, got a special kiss from her boyfriend, Cy Waits, and now we're taking a look back at her most memorable bikini, swimsuit, and sexy photo shoots from years past. Click through to see her impressive beach wardrobe! Read more

Paris Hilton and Cy Waits couldn't keep their hands off each other during an afternoon at the beach with her family in Maui yesterday. She put on a tiny bikini to play in the waves with her man after donning a unique cutout suit the day before. Her sister Nicky shared her own sweet PDA with longtime boyfriend David Katzenberg, and even the Hilton parents Rick and Kathy joined in on the love- and Read more

Paris Hilton put on her bikini and headed to the beach in Cabo today with her boyfriend, Cy Waits. The two spent Christmas in Hawaii with her family, but decided to trade in the tropical paradise for another relaxing retreat to welcome the New Year. The make-out-loving couple snuck in a few kisses as they frolicked around in the sand. They're the latest to join the long list of celebrities who Read more

Stars shared their extended Thanksgiving weekend activities on Twitter this week. Paris Hilton had a bikini-filled vacation, while Gwen Stefani spent quality time with her husband, Gavin Rossdale. Gisele Bundchen dressed to impress for an event, and Nicole Richie caught up with her sister, Sophia — click through to see all the pics, and don't forget to follow PopSugar on Twitter for exciting Read more

Paris Hilton and her boyfriend, Cy Waits, indulged in some PDA as they arrived at a cocktail party in Mexico City last night. They were celebrating the launch of Paris's new shoe collection after meeting with fans and chatting up the line at a press conference earlier in the day. She shared her excitement for the project, saying, "The girls all love my style. When they buy my products they can be Read more

Paris Hilton kept her 30th birthday celebrations going yesterday in NYC with three interview around the city. She first stopped by The Wendy Williams Show in a black and white mini to share a cake with the host, then changed into a flowing green maxi to head over to The Late Show. She actually sat down with David Letterman wearing something gold, and chatted all about her new iPhone app and how Read more

Cindy Crawford put on a purple bikini to lounge poolside with her husband, Rande Gerber, at their Cabo villa on Friday. The pair were joined by friends Naomi Campbell and Kid Rock for lunch before moving their New Year's Eve preparty down to the beach. It's been a relaxing mix of family time and hanging with their famous friends for Cindy and Rande, who partied with Jessica Alba, Paris Hilton, Read more

Bar Refaeli is the latest celebrity to slip south of the border this Winter, popping up in Cabo yesterday sporting a string bikini. Tis the season for tropical getaways, and she's joining Cameron Diaz, Paris Hilton, Elisabetta Canalis, Rihanna, Stephanie Seymour, and more on this week's beach brigade. Bar is once again among our sexiest women of the year and 2010's hottest swimsuit moments. In Read more