Bruce Willis and Demi Moore's Daughters Stun in Matching Pink Swimsuits

Bruce Willis and Demi Moore share three adult daughters born during their decade-plus marriage, Rumer, 35, Scout, 32, and Tallulah, 30. The three sisters seem to be extremely close, often popping up on each other's social media accounts and photographed out at Hollywood events, sometimes with their famous mom.

And just a day after showing off her post-baby bikini body, Rumer shared a series of photos of herself and her two older siblings (they also have two half sisters, Mabel, 12, and Evelyn, 9, from Willis' current marriage to his wife Emma Heming Willis) in matching pink swimsuits playing with her one-year-old daughter, Louetta.

"On Wednesdays we wear pink," Rumer wrote, referencing the 2004 comedy Mean Girls, "featuring the littlest Willis." While the 35-year-old opted for a sleek, high-cut one-piece style, Tallulah wore a string bikini and Scout rocked a tank-style two-piece with a bikini bottom.

The sisters, along with their mother and stepmom, have put together a united front since Willis was diagnosed with frontotemporal dementia. Recently, Rumer penned a sweet tribute to her father on his 69th birthday.

"Oh Daddio, to be loved by you is such a gift," she captioned a series of photos of herself and Willis from over the years. "You are the funniest, most tender, charming, out of this world silly talented and magical papa. Looking through these photos this morning I am just filled with the deepest gratitude that we chose to spend this life together. I am your first baby and man sometimes I wish I could be tiny enough to just cozy up on your chest again and laugh and cuddle you."

"I love you so deep in my bones I don’t know how my muscles hold them. You are the greatest papa I could ever hope for," she added. "Thank you for your generosity, your silliness and heart. Lou loves you so big."