SOLY HUXWomen's Spaghetti Strap Floral Print Bikini Bathing Suit 2 Piece Swimsuits, Black, Small

How do the bottoms fit? Cheeky? High waisted?

is this appropriate for a 12 yr old who is the size of an adult? will the bottom be covered? she's 5'4" and a size 2.

Can i exchamge just the top?

I wear an 36D bra and fit large pants but what size should I get in 5’3 and 160-170 something lbs and idk what size I need