Taylor Swift wore a Blogilates skort for 3 seconds. Here’s what that did to sales.

Popflex is one of the biggest brands to emerge from the brain of a YouTube creator—and founder Cassey Ho (aka Blogilates) is now shipping out more orders than ever, thanks to Taylor Swift.

Ho, who has nearly 10 million subscribers on YouTube, has been uploading fitness content to the platform since 2009, and in 2016 launched Popflex, her own line of activewear.

Now, Ho’s brand has gotten a new push of popularity after Swift wore the Popflex Pirouette Skort during a video released as part of the promotion for her new album, The Tortured Poets Department. In the video, Swift is briefly seen on a pickleball court, swinging a racket while wearing the lavender version of Ho’s skort.

That video debuted April 19, and the skort gets a total of about 3 seconds of onscreen time. Those 3 seconds were all it needed: Within 15 minutes of Swift’s vid going live, Popflex had already sold out of the lavender skort, Ho says.

It also sold out of the skort’s 12 other colorways–and, for the first time in the brand’s history, had to open presales “to meet the overwhelming demand for their product,” Shopify

president Harley Finkelstein wrote in a LinkedIn post. (Popflex’s digital storefront is built on Shopify.)

Popflex now has more than 10,000 skorts on pre-order, Finkelstein added, and has seen a 600-700% increase in sales since April 19.

“One of the biggest people in pop culture wearing the product of a small business is life-changing,” he added. “We’ve built a platform to handle the demand and meet the power of the Swifties.”

In a post on the Blogilates site, Ho thanked Swift for “supporting an independent designer.”

“I’ve watched you battle those who have taken advantage of you and your work over the years and the way you fight with grace and masterful creativity gives me so much strength to keep designing,” she wrote. “Your perseverance and constant evolution are what I love most about you. You’ve showed me that no matter how many people (and corporations) try to take from me, they can’t ever have my brain or my heart.”