Fashion’s “Last Emperor Valentino Garavani“, has mostly stepped back from design, but an invitation from the New York City Ballet proved too good to let pass. It had been a dream to work with the company and his friend, NYCB ballet master in chief Peter Martins, Garavani said at the Ballet’s annual gala last Thursday, even if designing nearly 25 costumes for the one-night-only performance was something of a learning curve, even after so many years in fashion.

It was a successful one, to judge from the reaction of the friends and fellow designers who came out for the performance and post-show dinner.

 Sarah Jessica Parker in Valentino with the designer.

 Karolina Kurkova in Valentino.

 Anne Hathaway in Valentino.

 Diane von Furstenberg and Barry Diller.

Martha Stewart and Dennis Basso.

 Narciso Rodriguez and Tory Burch.

 Giancarlo Giammetti.

 Fe Fendi in Carlos Miele.

 Iman in Valentino.

Daphne Guinness.

 Delfina Blaquier in Jason Wu at the post-show dinner party.

Valentino created costumes for three ballets and a pas de deux.

Three dances were presented with new costumes by the fashion designer Valentino, as was a world premiere; a Balanchine ballet was performed with its three lead roles redistributed among eight dancers; and Valentino was honored in film and, finally, onstage.New York City Ballet’s season continues through Oct. 14 at the David H. Koch Theater, Lincoln Center;  (212) 496-0600, nycballet.com.