We're huge fans of Nasty Gal around StyleList HQ, and when we found out Co-Founder and CEO Sophia Amoruso was writing her debut book, #GIRLBOSS, on how she built her style empire from the ground up, we couldn't wait to get our hands on a copy and dive right in.

#GIRLBOSS is now on sale today, May 6th, and in honor of the book's debut, we're giving away 3 copies on Twitter to 3 lucky winners!

It's easy to enter! Follow @NastyGal and @StyleList on Twitter and retweet 1 of 10 promotional tweets for a chance to win!

Full rules:
• Open to legal residents of 50 United States and the District of Columbia who are 18 and older.
• To enter, retweet (true retweet, quoted retweets will not be counted) 1 of our 10 tweets stating "RETWEET for a chance to win 1 of 3 copies of @NastyGal CEO @Sophia_Amoruso's debut book #GIRLBOSS! Full rules: [RULES]."
• Contest begins on May 6th, 2014 at 12:01 AM Eastern Time and ends on May 6th, 2014 at 11:59 PM Eastern Time.
• You may enter up to 10 times.
• 3 winners will be selected in a random drawing at the end of the contest.
• 3 winners will each win 1 copy of "#GIRLBOSS" by Sophia Amoruso with an approximate retail value of $26.95.
Click here for complete Official Rules.