Gisele Bündchen Shows Off Her Backside in Barely There Bikini Bottoms

Gisele Bündchen slipped into a black bikini for a dip in the ocean in Costa Rica last week. She showed off her body in tiny Brazilian-cut bottoms, and though she was joined by her baby daughter, Vivian, the beach day could have easily doubled as a high-fashion photo shoot. Gisele was also in a two-piece when she went for a walk on the beach with her sister Rafaela on Wednesday; the supermodel and her relative sported matching two-pieces for the relaxing outing and shared a laugh while strolling on the sand. Twenty-seven-year-old Rafaela, who is the youngest of the five Bündchen sisters, flaunted a figure that's equally impressive to her model sister's.

Gisele headed to sunny Central America after a chilly Thanksgiving in New England; she shared a photo of the snowy scene while wishing her followers a happy holiday last week, writing, "May our lives be full of light, love, thanks and giving." One family member that's likely not with Gisele is her husband, Tom Brady — his NFL team, the New England Patriots, won their game against the Chargers on Sunday, and he's set to face the Miami Dolphins this weekend. Keep reading to see all the photos of Gisele and Rafaela on the beach, then check out more of the year's best bikini moments!