What does it take to play Donna Sheridan in Mamma Mia!? The part of the Greek taverna owner with a trio of past lovers on her doorstep and a daughter to marry off—all set to the tunes of Swedish super-group ABBA—is one mother of a role. To find out more about all of that belting, dancing and Spandex-wearing, we caught up with Beth Leavel, a Tony winner for her performance in The Drowsy Chaperone, as she prepared to step into the Mamma Mia! spotlight. (She begins performances at the Winter Garden Theatre on September 22.) After last week’s intimate peek into the rehearsal room, we are now getting seriously up close and personal with the diva. Leavel lets us into her final fitting for her skintight, sparkly, over-the-top Dynamo costume. Did you think Leavel smacking her bottom and yelling “work it” in the first video was hilarious? Then you gotta watch the woman get into her platform boots and turn into a glam superstar! And don’t forget to come back for more in our series on Leavel’s road to becoming a Dynamo.