The award was presented by her friend Stella McCartney, who also designed the amazing blue gown Liv wore the the event.
Before she presented Liv with her award, Stella described her as 'a true inspiration,' adding, 'She's a wonderful friend, an amazing mother, and someone who demonstrates that incredible career success doesn't have to mean sacrificing the important things.'
'She's one of the most versatile actresses of her generation, making us fall in love with her over and over again in indie films, blockbusters, horror movies, cult classics, and some of the most iconic music videos of all time.'
To us, Liv will always be Corey from Empire Records but her most recent role in TV series 'The Leftovers' is winning praise and box-set bingers around the world.
In the drama, she plays the character Megan Abbott, a woman who soon becomes the target of a cult called the Guilty Remnant.
Speaking of her role in the hit TV show, she told us that she knows as much as we do about her character's fate.
'We don't get told anything until we start shooting!' she said. 'And sometimes I only find out what's goingMore