Click to email this to a friend (Opens in new window)

Click to share on Twitter (Opens in new window)

Click to share on Facebook (Opens in new window)

Milan-based designer JJ Martin was celebrated in Little Italy on Thursday.

At a fashion-filled birthday party for Martin at Marcellino on Mulberry Street, “RuPaul’s Drag Race” star Shuga Cain surprised the crowd with a rousing rendition of “Happy Birthday” in Italian, and a “custom cookie-pizza cake” by Flour Shop was unveiled.

Said an impressed guest: “Shuga Cain was very nice and chatted to all the guests, including Huma Abedin. [Cain] was recently eliminated from ‘RuPaul’s Drag Race.’

She said she studied opera, so she was relying on that training to sing ‘Tanti Auguri’ in Italian!”

Also spotted were guests including shoe designer Brian Atwood, photography team Inez & ­Vinoodh, and editors from Architectural Digest, InStyle and WSJ. Magazine. The eatery was outfitted with prints from Martin’s La DoubleJ collection — on tablecloths and waiters’ aprons — while many guests wore the line’s explosively colorful ­creations.

Celebrants later grooved on a patio to 1980s

Euro-pop tunes on a playlist created by Wet frontwoman Kelly Zutrau.