There seems to be an endless amount of summery snaps from the stars on Instagram as of late, and this weekend was no different. Olivia Munn spent her Sunday soaking up rays in bikini on a rooftop, and shared a snap of her lazy day with the caption: "Britt + O #rooftopsunparty." Other famous faces also celebrated the sunny weather, including Adam Levine, who got tangled up in a pool floatie, and Karlie Kloss, who snapped a sweet photo with her sisters at the beach. But they weren't the only ones who spent the weekend enjoying the last weeks of summer. Keep reading to see the best celebrity Instagrams from the weekend.