Look of the week: Kate Upton's sexy, retro-glam bun
Kate Beckinsale's twist-y bun at the 2014 LACMA Art + Film Gala.
Emma Stone attends the premiere of 'Birdman' during the New York Film Festival.
Selena Gomez rocked a sleek bun at the 'Rudderless' premiere in Los Angeles.
We're calling it now -- the middle-parted bob, like this one on Rose Byrne, is the going to be the hottest hair look of the season.
Chloe Grace Moretz's swept-up, no frills bun at the Toronto International Film Festival this week.
Gwen Stefani's straight and sleek midi bob at the Emmy Awards.
Nina Dobrev's messy braid at the 2014 Teen Choice Awards.
Julianne Hough arrives at the Los Angeles Premiere 'Let's Be Cops', sporting a platinum pixie bob.
Jessica Alba's deep side part during the press tour for her new movie, 'Frank Miller's Sin City: A Dame To Kill For', during Comic-Con.
Kate Bosworth's gorgeous braided updo at the Style Thief app launch at the Chateau Marmont in Los Angeles.
Diane Kruger's double braid situation at the red carpet premiere of "The Bridge".
Olivia Wilde at a movie premiere in NYC.
Alessandra Ambrosio rocks a ponytail underneath her Panama hat at an amusement park in Los Angeles.
Jennifer Lawrence stepped out in NYC with a grown-out pixie cut.
Katie Holmes out and about in NYC -- with bangs!
Catherine, Duchess of Cambridge shows off her ponytail during the royal tour in New Zealand.
Kate Upton sports a sexy, voluminous updo at the UK Gala premiere of 'The Other Woman' in London.
Nina Dobrev sports a hair bow at the 2014 PaleyFest.
Emma Stone goes red again at The Amazing Spider-Man 2 photo call in Sydney, Australia.
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Kate Upton showed up to the London premiere of her new comedy, The Other Woman, in which she stars alongside Cameron Diaz and Leslie Mann, looking as stunning and glam as always. However, what we loved most about the look was her sexy, voluminous, swept-up bun.
Actually, we're not totally sure it even is a bun we're talking about here. We're pretty sure Kate's hair stylist teased the front part of her bangs reallyyyy high up, creating some sexy volume and definition, bringing her updo to new heights -- literally figuratively. Even if it's not a real bun, the retro glam effect is sexy and fun, and probably not that hard to recreate. All you need is a good hairspray.
We've said it before and we'll say it again -- we love the top knot, but it's best to have options. Click through the gallery to see more hair looks we've loved.