Two excellent places to find a new retro bikini online include: 

• ModCloth – ModCloth features nearly 300 retro bathing suits, affordably priced from $15 to $200. Some of their cutest vintage bikinis are the flirty, California Coast-inspired Nanette Lepore Highway One My Heart, the adorable, halter-topped Fave Denim Swimmies Two Piece, and the playful, rockabilly Coupe and Saucer Two Piece.

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• Shabby Apple – This online store offers a small but reasonably priced selection of vintage suits inspired by fashions from the '20s, '50s and '60s. Their fashions are both classic and unique, such as the Sailboat bikini, the Flamingo bikini and the Cadence bikini. 

Suit Your Style: Mix & Match Bikinis 

Mismatched bikini tops and bottoms can be a lot of fun. They give you a chance to experiment with colors and patterns. When you want to try a bikini top with a bold print, for instance, using a subtle, single-colored bottom can tone it down a little and create a more balanced look.