Heidi Montag Gets Back to Bikini Photo Shoots and Strikes a Pose in Vegas Robert, Leighton, Shia, MK, and Ashley: 25 Stars Who Are Turning 25 This Year! Pics: Heidi and Spencer's Beard-Free, Kissing Beach Shoots! Heidi Rings in 24 With Wild Animals and Kisses From Spencer Bikinis, Boobs, and Butts: Happy 24th Birthday Heidi Montag! Pics: Heidi Montag Squeezes in One More Bikini Shoot Before Leaving Costa Rica! Tom and Suri Cruise, Rihanna and Heidi Montag in Bikinis, and More in This Week in Pictures! Pics: Heidi Montag Brings Her Puppy and Cocktail to Her Latest Bikini Shoot! Pics: Heidi Sports a Bikini For a Lonely Beachside Stroll Pics: Heidi Montag's Heartbroken Bikini Photo Shoot! Get Ready For Tonight's Finale With A Look Back at The Hills! Pics: Heidi Montag Files For Legal Separation From Spencer Pratt! Heidi Montag Poses For a Pensive Post-Spencer Photo Shoot With New Roommate Jennifer Bunney! See Heidi and Spencer Head Out For an Ice Cream Photo Op! Heidi Montag and Spencer Pratt's Campy Trip to Pendleton! Heidi Montag Hits Vegas in a Teeny Bikini! Stars on the Set This Week! Kristen Stewart, Lauren Conrad, and Demi Moore in This Week's Fun and Funny Celebrity Twitter Photos! Heidi Montag, Her Assets and Spencer Pratt Seen Filming Her Jennifer Aniston Movie Cameo! Heidi and Spencer's Champagne, Lingerie, and PDA Valentine's! Heidi Keeps Her New Body in Shape With Yoga! Heidi Faces GMA After Her Plastic Surgery Makeover Best of 2009: Heidi and Spencer's Year in Photo Ops Best of 2009: Celebs Show Off Their Team Spirit