Victoria Beckham may not smile, but she can strut with the best of ’em.

The Spice Girl turned designer, 42, took on Times Square during her recent stay in the Big Apple for New York Fashion Week. In a video her eldest son, Brooklyn, posted on Instagram, Victoria dances her way through the congested — and currently under construction — tourist spot without missing a beat.

The dance-athon is set to the Bee Gees’ “Stayin’ Alive,” and David Beckham’s petite ladylove brings it in her simple black-and-white ensemble. The mom of four werks it while she dances with a street performer …

Pays tribute to Old Glory, while flashing her signature Posh peace sign …

Dances circles in front of a fence …

And shakes it next to a creepy costumed Elmo …

… and Cookie Monster (with Olaf).

Fun fact: She does it all in flats, which are practically against her religion. ‘Cause not even Victoria Beckham could dance over subway grates in heels.

Brooklyn, 17, described Victoria as a “cool mum” in the video caption and noted that she is “bringing fashion to the streets.” He also tagged David, who must have been along for the nighttime groove session, and Victoria’s hairstylist bestie Ken Paves.

So while she danced like nobody was watching, a lot of people were — some she knew and many she didn’t.