A sister site is a website that is almost exactly like your own site except it's probably just a tad different. Like Jonasbrothersfan.com's sister site is a Miley Cyrus Fansite and a Demi Lovato Fansite. So it's mostly about people or things that are related to it so like J14 and Lifestory are sister Magazines since they are owned by the same company.
My sister site is www.jobroandsmileymiley.webs.com. This site belongs to one of my best friends. Her name Jordan. The site is all about the JoBros just like mine. She is my one and only OJD buddy!! We love those Jonas Boys so much... they are basically our life and their what we live for. Their just soooooo AMAZING!!! She is a true JB fan!! We love them for them!! We love Joe for his hilariousness...We love Nick for his sensitiveness.....and We Love Kevin for his amzingness!! And it just so happens that they are totally beautiful!!! haha! We met because of them and now we're as close as if we've been friends our whole lives which is ttly Amazing!! THANK YOU JONAS BROTHERS!! (and i guess Miley 2 for having a concert where we could ttly fall in love with them at! haha!)
These are the pages that her site has: