The stores will open on November 10 at 70 Burlington Arcade and 20 Foubert's Place in W1, after designers Sadie Frost and Jemima French opened their first store in Islington, north London.
The stores follow the launch of the label's transactional website earlier this month.
Sadie Frost said: "Following the success of our store in Camden Passage, Islington, we’re delighted to
be opening two more London stores. The area in and around Carnaby Street is so full of personality, we think it’s perfect for our brand. And we’ve chosen Burlington Arcade for its classic and luxurious appeal."