Selena Gomez sang Lady Gaga songs and chatted about her favourite singers as she was having her make-up done.
The 18-year-old pop singer spoke about Gaga and Katy Perry.
While she was talking about Katy, Selena mentioned the song that Katy wrote for her second album A Year Without Rain.
The track is called Rock God.
Check out the video of Selena below.