Start warming up your vocals ... or not ... for the Grand Rapids Lip Dub Video set to be shot on Sunday!

Event coordinator Rob Bliss is working with the city to bring a crew to the downtown area and film as many people lip synching to the tune of 'American Pie,' as possible!

It all begins at 10 a.m. and will end promptly at 2 p.m. to make way for those who have tickets to see Wicked Divas at DeVos Performance Hall.

Click here for all the details of local celebrities set to be in the video ... and parking scoop.