Riverdale's Lili Reinhart showcases her curves in floral swimsuit during impromptu beach photoshoot

Kourtney Kardashian flaunts her pert derriere in bike shorts at her beach house in Malibu

Ireland Baldwin frolics with friends on the beach in Malibu in a barely-there mismatched bikini

April Love Geary and Robin Thicke enjoy beach with kids