Bikini

A bikini is a pair of underpants or the bottom part of a swim suit that is usually worn by women for comfort and for attraction.

In the EMPATH: The Luckiest Smurf story series, Smurfette wore a bikini about a year after Empath's final return from Psychelia during the Summer Solstice celebration in the Imaginarium. She mostly wears this to attract Empath's attention towards her, although it eventually became her standard form of swim wear.