The 33-year-old pop star showed off her ballet moves to the wildly popular track. "I could dance to this song a MILLION times," Spears captioned the Instagram video. "Love you @adele!"
Adele has also expressed her love for Spears. "I'd like to tour properly. I'd like to see Britney in Vegas," she told i-D magazine recently.
Spears responded to Adele's quote, tweeting: "@Adele I'll trade you 2 tickets to my show for 2 tickets to YOURS! Stop by #PieceOfMe and say #Hello anytime!!"