You sign up for a Fabletics VIP Membership at checkout. Add items to your cart, select the VIP Membership option, then enter your email and zip code, create a password, and complete your first order. New VIP Members get an introductory offer of up to 80% off their first order: 80% off 2 items and 70% off the rest.
After you join, you choose each month between the 1st and 5th whether to click "Skip the Month" or be billed the $69.95 monthly membership fee, which includes a VIP Credit.