Taylor Swift Performs with Avril Lavigne and OMI in San Diego

A video posted by Suyapa Villalvir (@suyapaav) on Aug 29, 2015 at 10:22pm PDT

A video posted by 102.7 KIIS FM (@1027kiisfm) on Aug 29, 2015 at 10:16pm PDT

Taylor Swift performed on stage in San Diego tonight, August 29 at Petco Park on her 1989 Tour. During her show, Taylor brought Avril Lavigne onstage to perform Avril’s hit single, “Complicated”.

Taylor had one more surprise in store for her fans who attended tonight’s show. The singer also invited OMI out on stage tonight to perform his hit single “Cheerleader”!

Tomorrow, August 30, Taylor is set to attend the 2015 MTV Video Music Awards. Gigi Hadid and Serayah are set to support Taylor at the event to see if she takes home “Video of the Year” for “Bad Blood”.