It's sample sale season! Here's some I think are worth checking out (speaking from previous experience).
Maison Martin Margiela, MM6, Just Cavalli, and Viktor & Rolf
Thursday, May 3 through Saturday, May 5. Thurs 2pm—7pm, Fri 10am—7pm, Sat 12pm—5pm. 220 W. 19th St between Sixth and Seventh Aves, 10th floor