Britney Spears Shows Off Bikini Body on a Family Vacation, Plus More Celebrity Instagrams from the Weekend

It was an action-packed weekend for celebrities, and they proved it with their Instagram snaps. Britney Spears posted a too-cute photo of herself (clad in a bikini) splashing in the waves in Hawaii with her two sons, Jayden and Sean, while Demi Lovato also shared a sweet photo of herself enjoying the sunny weather with her puppy while wearing a two-piece. Meanwhile, Justin Bieber goofed around with Kourtney Kardashian’s son Mason, while Rihanna watched her new movie Home front-row in a theater. See these and more of our favorite Instagrams from the weekend below:

Demi Lovato:

Justin Bieber:

Rihanna:

Michelle Obama:

Ariana Grande:

Olivia Palermo:

Mariska Hargitay:

Sofia Vergara:

Michelle Rodriguez: