• Celebrate the launch of Katswalk Magazine, a new style blog focusing on high fashion, music, and film. Guests will enjoy a fashion show by the editor, a performance by comic Sean Attebury, and music by D.J. Uri Dalal. Hudson Terrace, 621 W. 46th St., nr. Eleventh Ave. (212-315-9400); 8-midnight. Call to RSVP.
• Check out opening day of “Out of the Shadows: The Fashion of Film Noir” at the New York Public Library for the Performing Arts. The exhibit celebrates the influence of film noir fashion on contemporary clothing. Runs through November 11. 40 Lincoln Center Plz., at 64th St., (917-275-6975); exhibit open M, Th (noon-8); T, W, F, S, (noon-6).
• Browse Realm’s summer sale to find Alexis Mabille dresses from $800 (originally $2,000), Thierry Mugler blazers from $630 (originally $1,575), and Jitrois dresses from $1,350 (originally $1,950). 98 Greene St., nr. Prince St. (212-334-9600); M-S (11-7), Su (noon-6).