They’re pretty in pink.

Rumer Willis and her sisters Scout and Tallulah joined “the littlest Willis” — Rumer’s 1-year-old daughter, Louetta Isley — for an adorable matching moment on Instagram Wednesday as they coordinated in colorful swimsuits by beachwear designer Hunza G.

The proud mom, 35, shared a carousel of photos featuring her family posing by a luxurious infinity pool and wrote, “On Wednesdays We Wear Pink 🌸 feat. the littlest Willis.”

The eldest Willis sister showed off her new swimsuit in a variety of other pics as she posed with little Louetta, sharing sweet snaps of herself lifting her daughter in the air and feeding her as Tallulah lounged in a chair next to them.

This is the second time the actress has shown off her postpartum body in recent days, with Rumer modeling a brown Hunza G bikini ($230) and a patterned Beachwood baby sarong ($98) on Instagram Monday.