Rihanna is topless in one of the new pictures she's just shared from her January vacation in Hawaii. The singer recovered from a big weekend at Coachella by posting a handful of new images on her Facebook page from the late Winter getaway. Rihanna was among the many stars at Coachella in Indio, CA, on Saturday and Sunday. The music festival gave Rihanna a chance to meet up with her pal Katy Read more

Leighton Meester wore a bikini to hit the beach in Rio yesterday with her new man. Leighton's boyfriend Aaron Himelstein was shirtless for the swimming session, and the couple showed plenty of PDA while out in the water and together on the sand. Leighton and Aaron are enjoying a Brazilian vacation that's included plenty of sightseeing and even meeting with some of her South American fans. She was Read more

With Memorial Day only a few weeks away, Summer is fast approaching. If you're wondering how well your cardio regimen will help you shape up for Summer, we've got the breakdown. Read on for the total calories you'll burn doing your favorite workout until the unofficial start of Summer! Read more

Looking to tone up before the Summer? FitSugar reader (and certified trainer) JessicaSmithTV created the following ab workout for just that! She shared it in our 10 Pounds DOWN! community group. Get ready for swimsuit season with this supershort, but effective, total-body summer shape-up workout created by fitness expert Jessica Smith that you can do anywhere — no equipment required! Read more

Alessandra Ambrosio is pregnant with her first son, and she showed off her growing baby bump recently in a bikini. The supermodel turned 31 on Monday, and her picture was a way of saying thanks. She wrote to her Facebook fans, "Thank you all for the wonderful birthday wishes! Have a great weekend everybody!" We marked her milestone as well — check out Alessandra's best bikini pictures from Read more

Cameron Diaz hit the beach in Hawaii with her family on Sunday. She wore a bright orange bikini to dip in the water and lounge in the sand. Cameron traveled to the islands on Saturday, but has since returned to LA. She landed at LAX last night sporting a fresh tan. Cameron's been on the go lately, having visited NYC and Switzerland recently. Her busy schedule will continue when she kicks off Read more

Rachel Bilson showed off her bikini body in a black two-piece suit while wading in the ocean with Hayden Christensen. The couple smiled and laughed in the water until some rain forced them to towel off and head inside. Rachel and Hayden are on vacation in Barbados, along with Rachel's father, stepmom, and two younger sisters. The actress has wrapped the first season of her TV show Hart of Dixie, Read more

Brooklyn Decker turns 25 years old today! From her hit movie Just Go With It to her prominent placement among the Sport's Illustrated swimsuit issue's many sexy stars, this model's career is on the rise and she has plenty of hot bikini moments to go with it. She loves to bask in the sun with her husband Andy Roddick, and she keeps in amazing shape to hit red carpets all over the world. We'll see Read more

A bikini-clad Hayden Panettiere and her boyfriend, New York Jets wide receiver Scotty McKnight, enjoyed a relaxing day in Hawaii earlier this week. The pair spent some time with friends in the sun and weren't shy about sharing PDA during their island getaway. Hayden, in a coral bikini, was seen throwing her arms around Scotty and kissing him as they lounged by the beach. Later on, she swapped her Read more