And so what is likely the last video off Katy Perry’s indomitable Teenage Dream arrives — mouth gear, continuity issues, Rebecca Black, and all. As has been teased pretty hard for the past few ...

During the set, Perry performed a rendition of her 2011 hit single ‘Last Friday Night (T.G.I.F.)’, and brought out Rebecca Black as a surprise guest.

In a video shared on TikTok, Perry went into a dance break while performing "Last Friday Night (T.G.I.F.).” During her brief interlude, Perry puts her arms over her head while she kicks out her ...