Attention, fro-yo addicts: tomorrow, 16 Handles is opening a new, 1,500-sq. ft. flagship store in SoHo with 16 (!) rotating flavors and a fully-loaded toppings bar. To celebrate the new space - which will surely be a hot spot among neighborhood fashionistas - the store is giving away one year of free yogurt to the first 16 people who visit. If you're one of those people who pops into 16 Handles after SoulCycle class every day, this could just be your Powerball. In order to be eligible, you have to check in on Foursquare and show the cashier your phone at check-out (240 Lafayette St.).