Sophia Amoruso, the renegade fashion authority, “#GIRLBOSS” author and founder of millennial fashion brand Nasty Gal, explained in a YouTube video why she’s  stepping down as CEO at Nasty Gal and promoting retail guru Sheree Waterson in her place.

In her blog, Amoruso said the following: “I’ve found someone, who I’ve worked with for a year, who I am really excited to put in the role of CEO. That’s a position I’ve had for eight years now. I’ve spent a long time, probably the last couple years, thinking constantly about whether this is the job that I want or the job that I’m best at. I’ve spent so much wonderful time with our customers, on the heels of the book tour and the opening of our first retail store, that I found myself just really wanting to spend my time extending our brand, which means sometimes being out of the office. But it would really shortchange Nasty Gal for me not to be out there, engaging with our customers, learning things and opening stores.”

According to a Nasty Gal press release, Waterson joined the retailer in early 2014 as president and chief product officer. In that position, she oversaw the merchandising, design, planning and production functions of the company, successfully improving Nasty Gal’s assortment and playing an integral role in opening the brand’s first brick-and-mortar store in Los Angeles.

In her new role as CEO, Waterson will be partnering with Amoruso to evolve Nasty Gal into a dominant retail presence. Waterson has also been named to Nasty Gal’s board of directors.

“I’m excited to support Sophia and lead Nasty Gal in this new chapter,” said Waterson in the company press release. “We have an incredible team that’s made huge strides in a short time, and I look forward to executing on the significant opportunity ahead of us. The future is bright.”

Prior to Nasty Gal, Waterson served as lululemon athletica’s executive vice president and chief product officer. In addition, she was formerly president of Speedo North America.

According to the press release, Amoruso will still be very involved with the Nasty Gal business, serving as founder and executive chairman. She will be responsible for overseeing the creative and brand marketing functions of the business.

In the YouTube video, Amoruso gives some indications as to her future plans. She mentions that a paperback version of “#GIRLBOSS” is coming out later this year. She’s also working on Nasty Gal collaborations, prepping for the company’s second store opening in Santa Monica, Calif., in March, and revealed that “there’s probably going to be another book.”