JustFab, formerly Justfabulous, is an online subscription fashion retailer that carries selections of shoes, handbags, jewelry, and denim. It offers a personalised shopping experience based on members' indicated fashion preferences.
Membership costs $39.95 per month (United Kingdom: £35.00 per month) and is automatically conferred upon making a purchase. The registration process requires members to complete a survey regarding their fashion preferences. At the beginning of each month, a "personal stylist" selects items based on these preferences, and the member can choose one of the selections, request new options, or skip the month altogether without charge.
In December 2011, JustFab reached 4 million members. By January 2013, this number had grown to 10 million.
The company was founded by Don Ressler and Adam Goldenberg in March 2010.Kimora Lee Simmons joined JustFab as President and Creative Director in September, 2011.
JustFab received $33 million in funding from US venture capital firm Matrix Partners in 2011. In 2012 the company received an additional $76 million from Matrix Partners, Rho Ventures, Technology Crossover Ventures, and Intelligent Beauty and expanded its operations internationally to Canada, Germany, and the UK.
In January 2013, JustFab acquired children's fashion subscription company FabKids. Despite the similarity in their names, there was no previous association between the two companies.
A television show about JustFab and Simmons titled "Kimora: House of Fab" premiered on the Style Network in January 2013. The show covered daily life at the JustFab offices, Simmons’ role as President and Creative Director, and the duties of the company's marketing, merchandising, and public relations departments.
JustFab continues international expansion into Spain and France after acquiring The Fab Shoes in May, 2013.
JustFab acquires rival shoe scubscription service ShoeDazzle in August, 2013. The two companies will continue to run as separate brands. 
In September 2013, JustFab’s CEOs Adam Goldenberg and Don Ressler announced it has closed $40 million in its third round of funding to accelerate its already-fast international growth and enter new product categories.
The company's business model and credit card practices have been criticized as deceptive. In October 2011 a national class action lawsuit was filed against Just Fabulous, Inc. In September 2013 Gawker called JustFab "the biggest scam in online shopping". whilst Business Insider described their tactics as "shady" 
Tech Crunch has also criticized the company on deceptive practices to force subscribing to its VIP monthly fee service.