Here’s something cute to start your weekend off right. Perhaps you recall that Beyoncé and Jay Z opened the Grammys telecast with a performance of “Drunk In Love.” A video of Beyoncé’s rehearsal (with a Jay Z body double, incidentally) has surfaced that’s entertaining for reasons other than Bey’s breathtaking performance. Not that she charges through this rehearsal with anything less than authority — it’s just that in the final seconds, her baby daughter absolutely melts away her showbiz poise. During the song’s outro, Blue Ivy gets ahold of a microphone and repeats “Surfboard,” then “Hi mommy,” causing the superstar diva to crack a humongous smile. You’ll grin too when you watch it below.