Watch Beyoncé, Nicki Minaj’s “Feeling Myself” Rehearsal

Beyonce may be a pro when it comes to performing, but the star has yet to master her ice grill face.

Nicki Minaj clearly had a difficult time not cracking a smile as they practiced their “Feeling Myself” dance moves for the recent Tidal X: 10.20 benefit concert.

See clips posted on IG by Nicki Minaj: