Kate Mara and Jamie Bell Get Cozy in Malibu in New Instagram Snap

They may be part of the Fantastic Four, but it seems that Kate Mara and Jamie Bell also make for a delightful duo.

How the Fantastic Four Cast Became More Than Just Costars – Plus, Find Out Who's the Biggest Jokester on Set

Fantastic Four Costars Michael B. Jordan and Kate Mara Slam Awkward Radio Interview as "Just Ignorance"

Fantastic Four Stars Kate Mara and Michael B. Jordan Tackle Awkward Interview About Race and Looks: Watch

Kate Mara Partners with Oceana to Help Save Marine Life

Whales, dolphins and other marine life are dying needlessly in our oceans, and Kate Mara wants you to know about it.

The actress stars in a new PSA for Oceana, which explains how these majestic creatures lose their lives in nets that are meant to capture swordfish.

MTV Movie Awards 2015: The Looks You Didn't See on the Carpet

The Fantastic Four Trailer Is Here – and It's Dark (VIDEO)

Nothing like a trailer for a superhero movie to brighten one’s day – even if the trailer in question is more than a little dour.

On Tuesday, 20th Century Fox released its first trailer for the highly anticipated Fantastic Four, a reboot of the movie franchise that was initially launched in 2005 to a less-than-stellar reception. (The 2007 sequel even less so.)

Alexander Wang for H&M Debuts: Check Out the Sporty, Sexy Collection and the Celebs Who Stepped Out to See It!

See the most memorable looks from Alexander Wang’s H&M collection!

Kate Mara: 'People Tell Me My Haircut Looks Like Leonardo DiCaprio's in Romeo & Juliet'

Kate Mara’s hair happenings are a popular topic of conversation in the PEOPLE StyleWatch office. So when we caught up with her at an H&M New York Fashion Week event, we couldn’t wait to ask how her latest do has influenced her style. And speaking of influences, as it turns out, she’s got a hair twin.

From Emma Stone's Stunning Tulle Gown to Heidi Klum's Lingerie-Inspired Slip Dress, See the Buzziest Looks of the Week