"The world looks better upside down," she captioned a photo posted on Twitter on Friday night.
The singer, 33, has been enjoying the summer with her two sons, Sean Preston, 9, and Jayden James, 8, as she takes a break from her Las Vegas show, Britney: Piece of Me.
What It's like to Be at Home with Britney Spears and Her Boys
The trio had some fun in the sun in Hawaii, and the proud mom also shared a video on Instagram earlier this week of her boys' super skateboarding stunts.
Spears doesn't seem to be taking a break from her workouts while she's on summer vacay. The singer, who returns to the stage later this month, recently shared a pic that showed her doing an intense back bend along with the caption "Namaste."