Beauty Crush: Reese Witherspoon Rocks the Hot Topknot Trend

Credit: Jason LaVeris/FilmMagic

When it comes to her hairstyles, Reese Witherspoon tends to stick with polished blowouts. But when she dares to step out with a different 'do, we take notice.

At the LACMA Inaugural Art + Film Gala in Los Angeles on Saturday, the 5-foot-2 actress reached new heights not just in her black satin heels, but with a sky-high ballerina bun too. In addition, the 35-year-old sported a black Cushnie et Ochs number that featured a keyhole cutout on the chest.

Over the summer, Lauren Conrad kicked off the sleek topknot (she's dubbed hers the "fun bun") and since, the pinned-up 'do has won the hearts of many celebs including Kim Kardashian, Jennifer Lopez and Whitney Port who normally opt to wear their hair in long, loose waves.

Click here to watch as Port demonstrates her easy, topknot how-to.