10 celebrities Taylor Swift has brought on stage for her tour (+Photos)

3. OMI

Via ultramusic.com

Many would agree the song of the summer was “Cheerleader” by OMI. That said, the crowd at PETCO Park in San Diego went wild when OMI joined the stage with Taylor to perform the hit song on August 29. Taylor proudly announce, “he could be absolutely anywhere in the world tonight, [but] he chose to be in San Diego, California.” In turn, the approximately 60,000 fans cheered, many singing along to what’s become a radio staple this summer. Taylor then posted a photo of herself and the reggae singer with the caption, “just casually cheer leading with @omi tonight. What an awesome guy and incredible artist.”