Anna stole the show in a short dress that was covered in sequins and had a feathered trim.
She completed the look with a pair of black heels.
Anna was spotted on her way to the show looking super excited!
She and fellow actress Blake Lively, who also looked incredible at the VMAs, presented the award for best pop video.
The two actresses had the best time together and even inspired some of the cutest memes of the night. Blake didn't seem to mind that her hubby Ryan Reynolds skipped out on the show!
What do you think of Anna's VMAs look? Let us know in the comments.