The Gone Girl star was vacationing in Cancun, Mexico, on Thursday, where she rolled down her black one-piece swimsuit, leaving very little to the imagination as she sunbathed in the ocean.
"Breakfast on the beach," Ratajkowski captioned another cheeky shot.
And the "Blurred Lines" video star opted to go top-down for an Instagram video, writing, "When you're too excited about vacation."
Of course, being comfortable in her own skin is nothing new for Ratajkowski, who just this week, shared a totally nude photo on Instagram.
Watch the video below for more.