Let’s hear it for…
Definition 1 of 1
Pro Tip 1/3Group Encouragement
Used to unify a group in showing support or appreciation for someone publicly. 
Let's hear it for the volunteers who made this event possible!
Pro Tip 2/3Celebratory Prompt
A call-to-action that invites immediate applause or cheers usually after a performance or speech. 
And now, let’s hear it for the choir for their wonderful performance!
Pro Tip 3/3Colloquial Cheer
Primarily used in casual or informal settings, not in formal speeches or written language. 
Let's hear it for grandma, 90 years young today!