So, which ones are the daughters?!

Demi Moore blended right in with her two youngest children, Tallulah, 21, and Scout, 23, during a Father's Day spent poolside, rocking a seriously toned bikini body that literally made our jaws drop!

"When you can't be with the papa…. #freeslw #POOLPARTY #mymomsbodtho," Tallulah captioned the snapshot, also acknowledging just how INSANE her madre's figure is.

Scroll down to see more celebrity swimsuit shots from summer 2015!