Gisele Bündchen and Her Sister Flaunt Their Good Genes in Bikinis

Hot beach bodies clearly run in Gisele Bündchen's family! On Monday, the supermodel hit the beach with her sister Gabriela Bündchen in Costa Rica, taking a stroll in the sand and a swim with the family dog, Lua. Gisele's been soaking up the sun a lot lately — we caught a glimpse of her Summer tan last week when she donned a leopard-print bikini and hung out with her daughter, Vivian Brady, and Lua. Gisele has been on her tropical family getaway for some time now; she shared a photo of her arrival on Instagram almost two weeks ago, doing a cartwheel on the beach with the caption, "Finally on vacation," and took a walk on the sand alongside her mother, Vania, days later. She also soaked up the sun with her twin sister, Patricia, as the duo rang in their 34th birthday with a festive cake on the beach. Sadly missing from all the action is Gisele's husband, Tom Brady, who recently started his Summer training session with the New England Patriots in Massachusetts. Even though he's not on the beach, he still received a sweet shout-out from his bikini babe when he turned 37 this past Sunday.

In addition to having fun in the sun with family, Gisele also seems to be embarking on a big adventure while in South America. She posted a photo via Instagram on Monday of herself and her close friend Kiara Kabukuru with the caption, "Here we go. . . 3 days in silence. #goinginward," so it seems as though the duo has entered into deep meditation. Keep reading for more photos of Gisele on the beach with her family.