This time, no one would would have mistaken Emma Watson, walking through Nice Airport in France on May 14, as a child. The Perks of Being a Wallflower actress, who was assumed to be an unaccompanied minor this past December while going through customs at New York's John F. Kennedy International Airport, rocked a sexy, mature look for her travel day this time around.

PHOTOS: Emma Watson's Harry Potter premiere style evolution

Clad in a tight, white skater dress and slim ankle boots, a sunglasses-wearing Watson looked like the stylish movie star she is. In fact, the 23-year-old actress was on her way to the famously glamorous Cannes Film Festival, which kicks off Wednesday, to promote her new film, The Bling Ring, directed by Sofia Coppola.

PHOTOS: Harry Potter stars -- then and now

The petite actress, perhaps most well-known for playing prim and proper Hermione over the course of eight Harry Potter movies, has been tweaking her squeaky-clean image of late. In The Bling Ring, based on a real-life gang of celebrity-obsessed teen thieves, Watson gets to play a bad girl, and on the cover of British GQ's cover this month, she wears a provocative cutout dress similar to the one Julia Roberts donned for her role as a hooker in Pretty Woman.

Indeed, Watson's grown-up, sexy-minimalist style was also on display at the Met Costume Institute Gala earlier this month as well. The British beauty looked amazing in a midriff-baring Prabal Gurung cutout dress with a thigh-high slit.

This article originally appeared on Emma Watson Wears Clingy White Dress at Airport in France