Mariah Carey celebrated the Fourth of July in part by posting an Instagram video of herself waving a miniature American flag while wearing a red bikini. The clip didn’t bother her husband, Nick Cannon, one bit.

Nick tells People magazine that if it makes Mariah happy, he encourages her to do that kind of stuff. This is how he rationalizes it: "When you got it, flaunt it.  It's a beautiful thing to be a mother and to be able to express your sexuality."

He says he and his 43-year-old wife are secure with who they are.  Besides, the 32-year-old Nick adds, "I actually grew up as one of those guys that loved to see those pictures."

Mariah showed off her fashion sense Saturday night at her concert at New York’s Central Park, wearing a couple of different slings, including one that was sequined and another that was feathery.  Mariah dislocated her shoulder the previous weekend during an accident on the set of her new music video.