Similar to a bikini and worn with a matching (or contrasting) bikini brief is a tankini.  The tankini is distinguished from the classic bikini by the difference in tops, the top of the tankini essentially being a tank top. 

The tankini works best for slim women with long bodies, as the tankini top creates the appearance of a shorter body.  The tankini can also be flattering on women with fuller figures. 

Like bikinis, tankinis also come in different styles.  There are Halterneck tankinis and underwired tankinis and padded tankinis, some with removable inserts.  To find an attractive tankini fit that will flatter your body, try pairing a light-colored, ruched tankini top with darker bikini bottoms.