Taylor Swift knew the perfect way to wish her 1989 tourmate Shawn Mendes a happy 18th birthday on Monday (Aug. 8): by lip-syncing his top 20 Billboard Hot 100 hit “Treat You Better” in an Instagram Story video.
Of course, Monday is also significant because it’s International Cat Day, and the out-and-proud cat lady celebrated the holiday by wearing her best neon cat sweatshirt.
Hot 100 Chart Moves: Shawn Mendes’ ‘Treat’ Climbs
Watch Swift give it her all in the video below:
she could not be any cuter pic.twitter.com/dILRZnoF6g
— yasmine (@tswiftcandle) August 9, 2016
Swift wasn’t the only famous friend to send birthday wishes to Mendes; Nick Jonas and Zedd also came through with some birthday love:
Happy birthday Shawn! You continue to evolve and push yourself. It’s great to see. Keep doing your thing bro. @ShawnMendes
— Nick Jonas (@nickjonas) August 8, 2016
Yoooo happy birthday @ShawnMendes !!!!!!!! pic.twitter.com/sZ997sODXi
— Zedd (@Zedd) August 8, 2016