Sarah Michelle Gellar is joining the long list of celebrities embracing a "Euro summer." Gellar posed aboard a boat with the bright blue Mediterranean behind her, resting against the vessel while wearing black cat-eye sunglasses. Gellar snapped a selfie from the boat while wearing a deep brown halter bikini top featuring gathered fabric and bow details. The actress later took a dip in the Mediterranean before climbing back aboard, accessorizing the swim look with a delicate necklace and stacked bracelets. CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTERFans and famous friends praised the sunny vacation photos in the comments.