Pool-Party Hair Ideas From Hollywood's Hottest Beach Babes

Anna Kendrick donned cutoff shorts and pigtails to accompany her striped bikini.

Need a bang solution for the beach? Copy Emilia's braided half-up hairstyle.

Gigi's the current It model, so we'll definitely be taking her hair pointers on our next beach vacation. These effortless waves are her signature style.

Selena divided her long brunette locks into two french braids while basking in the Summer sun.

Kim knows that there's no sexier poolside selfie than one featuring a slicked-back mane.

Gisele's topknot is perfect for any shoreside activity, including crafting a sandcastle or two.

When all else fails, Cameron Diaz knows that you'll still look chic on the beach with a ponytail-visor combo (plus, wearing a hat is good for your skin).

When you're frolicking on a yacht, look to a ponytail like Cara Delevingne's — it'll keep your hair out of your face so you get a perfect 10 on your big jump.

Even if you don't have Elle Macpherson's slamming beach body, you can still get her mermaid waves with a little conditioner and sea-salt spray.

Source: Twitter user ellemacpherson

Charlize showed off how good a pixie cut can look beachside.

A mussy topknot looked darling on Bar.

Seaside, a quick air-dry equals effortless waves à la Audrina Patridge.

For a day at the beach with her twins, Jennifer Lopez styled her hair in a water-ready topknot.

Using sunglasses as an impromptu headband à la Christina Milian is one quick solution, but we also advise keeping a few hair ties on hand for a quick low ponytail.

Nina Dobrev wore an over-the-shoulder style with a plait to create an undercut effect while basking at the beach.

Nothing will keep you cooler poolside than a light fedora like Julianne Hough's. Plus, you don't have to worry about burning your ears or having great hair — always a score in our book.

Hayden Panettiere pulled her long blond locks back into a casual bun to keep them from getting soaked in the ocean water.

Lily Aldridge's ombré highlights are perfect for Summer; the technique ensures little to no root touch-up is required. Be sure to use SPF in your hair to keep your style looking its best.

Katy Perry's side braid and bucket hat combined to create the ideal Coachella festival style at the Harper's Bazaar pool party in April.

Adriana Lima has mastered the ideal beach style for long hair. Take note, and casually whip your hair up into a clip before you surf the waves.

After a long photo shoot on the beach, Alessandra Ambrosio took in some sun with her copy of Fifty Shades of Grey, along with a clip to keep her bangs out of the way.

Candice Swanepoel sported windblown waves as she shot a bathing-suit campaign in beautiful blue waters.

Model Doutzen Kroes was obviously having a good time in the surf with her hair pulled back into a wet topknot.

Hilary Duff looked cool rocking a bandanna to keep from melting in the heat.

Make sure to steal some seawater for a easy DIY salt water hair spritz, and you're sure to have effortless waves like Erin Heatherton's.

Katharine and her dip-dyed strands took a dip in the pool at a Coachella party in Palm Springs.

Molly topped her long ponytail with a classic baseball cap for a sporty style while lounging poolside.