Well now she quite a few stars more to add to that list as she not only got the chance to sing You Oughtta Know with none other than Alanis Morissette but she sang Goodbye Earl with Natalie Maines from the Dixie Chicks!
Oh yeah, AND Ellen DeGeneres came on stage in a silver one-piece to get her groove on during Taylor's performance of Style.
But wait, there's more! Kate Hudson and Jessica Alba attended the concert with their adorable kids and both snapped pictures of their magical night!
Suki Waterhouse was also in the crowd and posted a sweet video to Instagram thanking the 25-year-old singer for a great night!
Ch-ch-check out all the performances, Ellen dancing on stage with Tay-Tay as well as Kate and Jessica's sweet snaps with their kids (below)!
But regardless of the speculation, it is clear the late athlete did have a very close relationship with the 22-year-old, who he spent the past four years with behind bars at Souza-Baranowski Correctional Center in Shirley, Massachusetts.
Kennedy, who is no longer on suicide watch and is reported to be the last person to see Hernandez before he hung himself in his cell, reacted to the death of his pal in a statement to RadarOnline.com, saying: