Katy Perry’s recent TwitPic of her disco-ball manicure was the beauty tweet heard around the world. Fashionistas flipped over the blingy nail candy—and why wouldn’t they? It’s a totally unexpected way to gussy up your LBD for New Year’s Eve. Here’s where to get the Swarovski-studded mani done in NYC.—Lauren Levinson
Valley
Half vintage boutique and half salon, this Cali-inspired staple counts Perry (for reals!) and editors from Vogue among its clients. The disco manicure costs $170 (or $150 if you mention TONY through January 1). 198 Elizabeth St between Prince and Spring Sts (212-274-8985, valleynyc.com)
Sakura
Complimentary green tea is included with your treatment at this Japanese spa’s uptown or downtown locations. The disco manicure costs $250 ($200 if you mention TONY through January 1). 1709 Second Ave between 88th and 89th Sts (212-722-1334); 35 E 1st St between First and Second Aves (212-387-9161, nailspasakura.com)
Shizuka
Calling all party procrastinators: This midtown spa, famous for its Geisha bird-poop facials, will be open till 6pm on New Year’s Eve. The disco manicure costs $180 ($150 if you mention TONY through January 1). 7 W 51st St between Fifth and Sixth Aves, sixth floor (212-644-7400, shizukany.com)