Image via Pure Barre

WHERE: All three Pure Barre locations

WHAT: Pure Barre challenges summer brides and bridesmaids to a three-month fitness challenge aimed at shrinking waistlines, toning arms, and lifting "seats." Participants sign on to take 70 hour-long classes in 90 days. While ballet-based interval training might sound like something fancy and elegant, these classes are no joke. You saw Black Swan, right?

Those who rise to the occasion will be entered to win a bridal prize package that includes free classes, a private party at Pure Barre, a boudoir photo session, and gift cards to the Wax Bar and Julep Nail Parlor.

The challenge costs $375—a $180 value compared to the regular rate for three months of classes.

WHEN: Participants must register for their first class by May 31.