Ever wondered how a celeb switches up her style between day and night? Well wonder no more, peeps because the Black Swan girls — the gorgeous Natalie Portman and Mila Kunis — showed us over the weekend. Both ladies attended the AFI Awards, then, just a few hours later, they headed over to the 2011 Critics' Choice Awards. And the girls' secret for adding a little va va voom to your look for after-five fun? An up 'do. Huh. Who knew it could be so simple?