As cyclist Lance Armstrong competes in the Tour de France, he's still making huge strides in his fight against cancer — only this time he's teaming up with a Gossip Girl writer.

Nike and Lance Armstrong's Livestrong Foundation have joined forces with Gossip Girl writer Jessica Queller to create a video telling both the inspiring story of her mother's battle with cancer, as well as her brave decision to get a preventative double mastectomy after testing positive for a breast cancer gene.

Check out a Q&A with Queller to find out more about her amazing story

The video is part of Nike's new "It's About You" integrated media and grassroots campaign featuring Lance Armstrong, other world-class athletes, celebrities and survivors, in a call to action to join the global fight against cancer.

Watch Queller tell her story in the touching video below:

For more information, go to www.wearyellow.com.