From the outfits to her stage presence, Taylor Swift gave it her all at the Rock In Rio USA concert in Las Vegas last night! Sounds like she's more than ready to take over the Billboard Music Awards tonight in Sin City...

T. Swizzle headlined the second weekend of the music festival on Saturday evening, and after kicking off her set with "Welcome to New York," she wowed the crowd with hits like "Blank Space," "Style" and "Shake It Off." Ed Sheeran joined her to perform his track "Tenerife Sea," and at the end of the show it seemed like there were more costume changes than songs!

Taylor is up for a whopping 14 awards at the BBMAs tonight, and she'll also be debuting her new music video "Bad Blood," which is about her feud with Katy Perry. Can't WAIT to see that!

Check out the gallery below for more pix!