The dresses were conceived with the help of a kit designed by Anina Trepte, a former model and founder of the 360Fashion Network, who wants designers to integrate technology into their work even if they cannot code themselves.

"I am on a mission to encourage other women to get into tech," Trepte told AFP.

On Trepte's initiative, designers Clare Tattersall and Azrael Yang used the kits to conjure up six dresses unveiled in a Harlem church at a show organized by Melange, a movement promoting diversity in fashion and the art.

Tattersall, a Briton who lives in New York, created one dress with large futuristic flower petals that open and close mechanically on their own -- the perfect eye-catching cocktail attire.

A second dress has a large silver hood that goes up and down with the click of a button.

The last is a fitting frock for the #MeToo era.

It features bits of metal appliqued to one shoulder, and when hidden motion sensors detect someone who is too close, the metal rattles and shakes.

Yang, who is based in Beijing, took her inspiration from the ocean and seaweed for her work, which gently undulate like waves, guided by sensors and environmental data.

"A phenomenal result," Trepte said of the dresses.

- 'Creative tool' -

Trepte, a tall American-born German woman with red hair and big blue eyes, gave up the catwalks and moved to Beijing more than a decade ago to devote herself to fashion tech.

"All the designs and the tech on these clothes were made by women -- and the men did the sewing, ha ha ha!" she said.

For Tattersall, the founder of New York-based fashion tech company ThunderLily, education is key.

"My goal is to get girls involved in math and technology, show them that technology is a creative tool," she told AFP.

Tattersall teaches girls of all ages about wearable technology, which she sees could be especially important in the future in terms of improving our health and fitness.

The dresses were also shown at a separate exhibition in New York's Union Square, along with some of Trepte's own wearable tech -- jewelry that lights up, wallets that charge cell phones and an "SOS" ring that sends a text and a GPS location to an emergency contact.

Also on display were kits to make gloves with LED lights or coats with heating, and even a robot that can prepare cocktails and is activated by wearable tech hidden in the sleeves of a jacket.

- A special guest -

There was a special guest at both the Harlem show and the subsequent exhibition -- the humanoid robot Sophia, made by Hanson Robotics.

Her features and gestures are lifelike -- right down to her eyelashes. The effect is unnerving.

At the Melange show in Harlem, she gave a speech about diversity. On the catwalk: models of all shapes and sizes, races and sexual orientations.

Rag & Bone joined the robotic fun in a different way -- for its big return to New York Fashion Week after a three-year absence, it deployed a giant robotic arm to film its catwalk show.

The images were shown live to the public on giant LED screens.

The robotic arm -- which was connected to sensors capturing the models' movements -- was almost a character in the show, according to Aaron Duffy, who directed the robot for the show.

It went from "kind of playful" to "pretty scary," Duffy told Fast Company magazine.