Mila Kunis wore a white Burberry dress to the Third Person premiere at the 2013 Toronto International Film Festival on Sept. 9, 2013. Credit: Arthur Mola/Invision/AP

While boyfriend Ashton Kutcher and his ex-wife Demi Moore chatted amicably while they strolled through the Burbank airport together after a shared flight on Monday, Sept. 9, what was Mila Kunis doing? The 30-year-old beauty was partying it up at the Toronto Film Festival and looking hotter than ever!

Kunis hit the premiere of her new film, The Third Person, in a white Burberry Prorsum Resort 2014 crochet dress with a plunging neckline that showed off her petite frame and post-summer glow. The actress, who is usually photographed wearing casual tomboy ensembles when she's not on the red carpet, accessorized with gorgeous drop emerald earrings and snakeskin pumps.

The Third Person, directed by Paul Haggis (Crash), tells the interlocking stories of three couples in three cities and stars Kunis, Olivia Wilde, Adrien Brody, Liam Neeson, Moran Atias, and James Franco, an actor she's worked with quite a lot. "We've done seven or eight things together. We have a very nice shorthand with one another," she told CityNews Toronto at the premiere.

Kunis also revealed this is her first time at the Toronto Film Festival: "It's a little crazier than I thought it was going to be! I honestly thought it was going to be a little more low-key. It's a little more fancy-pants here!" she said.