Needless to say, we're absolutely loving Guest Editors Kendall and Kylie Jenner! From the star sisters' beauty essentials, the duo's fashion favorites, their secret to a perfect selfie, and the other sisterly stylish pair they love, Kendall and Kylie have been revealing all!

We got our hands on a copy of the Jenner sisters' new book, Rebels: City of Indra: The Story of Lex and Livia,' and we're absolutely loving it! In honor of the sisters' Guest Editorship, we're giving away 5 copies of Kendall and Kylie's new book!

It's easy to enter, all you have to do is follow @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 5 copies of Guest Editors @KendallJenner & @KylieJenner's new book! Rules: [RULES]."
• Contest begins on June 27th, 2014 at 12:01 AM Eastern Time and ends on June 27th, 2014 at 11:59 PM Eastern Time.
• You may enter up to 10 times.
• 5 winners will be selected in a random drawing at the end of the contest.
• 5 winners will each win (1) copy of 'Rebels: City of Indra: The Story of Lex and Livia' by Kendall and Kylie Jenner with an approximate total retail value of $17.99.
Click here for complete Official Rules.