Pier 94, Twelfth Ave at 55th St. Subway: A, C, D, 1 to 59th St–Columbus Circle. Get ready for spring with this frock-themed blowout featuring dresses from the 1920s through ’80s. Look for a Lilly Pulitzer ’60s sundress marked $110 (was $130) and a Saks Fifth Avenue polka-dot style, pared from $325 to $295. You’ll also find warm-weather accessories, such as a Giorgio Armani straw hat tagged $450 (was $480) and 1950s Mexican espadrilles, dipped from $275 to $250. If you’ve ever wondered how valuable that garment is that you keep pushing to the back of your closet, NYC appraiser Joe Sundlie of Vintedge will be on hand to give you the real deal on what it’s worth for $5 (all of which goes to charity). Tickets are $15, but if you mention TONY at the door, you’ll get in for $10.