Based on Sophia Amoruso's book, "Girlboss" will follow Amoruso's story of how she went from selling vintage clothing on eBay to founding the multimillion-dollar Nasty Gal fashion label by age 27. In the series, Brittany Robertson portrays Sophia Amoruso, a rebellious, broke anarchist who refuses to grow up. She stumbles upon her passion of selling vintage clothes online and becomes an unlikely businesswoman. As she builds her retail fashion empire, she realizes the value and the difficulty of being the boss of her own life.