• Shop high-end consignment finds for 30 to 60 percent off retail at the DecadesTwo pop-up. Black Louboutin booties are $360, Jimmy Choo suede-and-lizard pumps are $285, and a Jason Wu embroidered black-and-white cocktail dress is $1,100 (originally $2,830). Through 3/21. Kiki de Montparnasse, 79 Greene St., nr. Spring St. (212-965-8150); Th–S (11–8), Su (noon–5).
• Receive 15 percent off new spring collections by Aimee G, Mel en Stel, Samoy Lenko, and more at Dumbo boutique Trunk. Wine and treats will be served. 68 Jay St., nr. Water St., Dumbo, Brooklyn (718-522-6488); 11–8.
• John Frieda hosts a free Natasha Bedingfield concert at the Highline Ballroom. John Frieda stylists will be on hand for hair consultations, and refreshments will be served. Attendees can also audition for a chance to sing onstage with the star during her upcoming tour. Reserve a ticket at forblondesonly.com. 431 W. 16th St., nr. Ninth Ave. (212-414-5994); 11–2 (styling and snacks), 6–9 (concert).
• Fall/winter merchandise is up to 90 percent off at the Luca Luca sample sale. Through 3/18. 19 W. 36th St., nr. Sixth Ave., fourth fl. (212-920-1211); 9–6.