Who says there ain't no cure for the summertime blues? Down in the dumps? Give yourself the perfect pick-me-up with a little retail therapy. On the top of your list, why not add a hot bikini that you will absolutely love two pieces? {relatedarticles}

Play around with the colors, patterns and styles of trending bikini fashions and select one that tickles your fancy and expresses your personal sense of style. 

Back to the '50s: Retro Swimwear 

Retro bikinis are back. With ample coverage and vintage patterns, retro bikinis accentuate a woman's curves and femininity. Think Marilyn Monroe. These suits normally have thicker straps, support the body well and are simultaneously sophisticated and sexy. 

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.{relatedarticles}
• 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. 

You can create a playful, abstract look and use your creations to express how you're feeling on that particular beach day. It's a good idea to have a black bikini in your collection because the pieces can be paired with most any other piece. {relatedarticles}

You can buy mix-and-match bikinis from stores that sell tops and bottoms separately, such as: 

• Victoria's Secret – Victoria's Secret offers six top styles (from halters to triangles) and four bottom styles (from hipkinis to double strings) in a variety of prints and colors. You can create a look that suits your taste using their online bikini mixer.
• Venus – Venus divides its mix-and-match bikini section into seven kinds of tops and two kinds of bottoms so that women can find a style that conforms to their body type. Their styles are gorgeous and all feature a sexy flair. 

Working on Your Tan: Convertible Bandeaus  

Another hot bikini style this summer is the bandeau top. Bandeau bikinis are good for women who have triangle-shaped bodies -- those who carry more weight on the bottom. Think Shakira and Rihanna. Convertible bandeaus have a removable strap that can be used to convert the bandeau into a halter top. {relatedarticles}

You can wear the top as a halter when you're walking down the beach or splashing around in the pool and need extra support. Then, when it's time for sunbathing, you can slip off the strap and avoid extra tan lines. 

Here are three cute and flattering convertible bandeaus we found: 

• Sperry Top-Sider Swimwear Authentic Bandeau – This classic bandeau has a nautical feel, removable soft cups and a cute zigzag stitch. Swim ‘n Sport, $100.
• La Turista Convertible Bandeau Bikini – This convertible bandeau has major Cuban cities printed on the top in bold, Cuban colors. The look is sassy and chic, and the solid-colored bikini bottom balances out the look. Nicolita, $112.
• Summer Brights Convertible Bandeau Bikini Set – Not only are bandeaus “in,” but so are bright colors. This fuchsia bikini is both. The top has a twisted front, nicely hugging the chest, and the bottom features ruching and ties. Conversation Pieces, $27. 

A Feminine Touch: Girly Bikinis  

The soft, feminine look is coming back for today's damsel. Sometimes, we just want to be girly, and there are tons of bikinis out there that will help you feel your feminine best. The trick, though, is to find one that's feminine, yet not overly froufrou. A few bows and ruffles are OK, but too many will lose the effect. {relatedarticles}

Here are a couple of the cutest girly-girl bikinis we came across: 

• Paradisus Halter Bikini – This sweet baby-blue bikini features a scrunchy-tie halter top and a scoop bottom with a banded waistband and front tie. It's adjustable, lined and has a flirty feel about it. Island Company, $144.
• Fringed Bandeau Bikini – This pink, adorable and fringed bikini can suit even the girliest of tastes and is affordable to boot. It's adjustable, fully lined and features cascading fringes on the top and bottom. Forever 21, $23.60.
• Empyre Girls Paradise Neon Mint Crochet Bikini – This cute halter top pink bikini has a mint green crocheted overlay and beaded tassels. Girly extraordinaire. Zumiez, $44.90. 

Classic Comebacks: Striped Bikinis  

Stripes are making a comeback. One of this year's hottest looks is the good ol' classic striped bikini. Depending on your mood and taste, you can choose bold or bright, horizontal or diagonal, traditional or contemporary. Striped bikinis are an awful lot of fun and can draw attention to the right areas. {relatedarticles}

Try to select colors that suit your skin tone in a style that's flattering for your body shape. Some of the striped bikinis we like the best this year are: 

• Blue Striped Texture Fabric Sexy Two Piece Swimsuit – This bikini features a slightly padded halter top and matching bottoms that snugly fit the hips. AMI Clubwear, $9.99.
• Mix-and-Match Cirque Bikini – This bikini top has a push-up design for a little extra "oomph." The bottoms are sporty, with side ties and great style. Best of all, you can mix and match styles and patterns to fit your body and personality, and the price can't be beat. Target, $16-18 per piece. 

Stripes, bandeaus, girly, retro and mix-and-match bikinis are the hottest styles you'll see on the beach this summer. Select one that suits your style, body and budget or invest in several to keep rocking all summer long.