In this week's Skills Challenge the remaining eight bakers are charged with making perfect wedding-themed mini Mousse Cakes. In the Master Challenge the bakers must create a croquembouche-inspired Wedding Tower, including two types of pastry and using champagne as the featured flavor. Guest judge, pastry and dessert wizard, Zac Young, joins Marcela Valladolid and Jason Smith to determine which one baker is sent packing.