Sad news: Big Brother 12 and 14 star, Britney Haynes, revealed on her Facebook page that her two month old daughter, Tilly, has been diagnosed with cancer.

According to TMZ, Haynes posted: “On September 1st, we were among the 720 sets of parents to be absolutely devastated with a childhood cancer diagnosis. September is National Childhood Cancer Awareness Month. Please take the time to pray for these children, our sweet baby included. We appreciate each and every one of you.”

Tilly was born on July 13 to Haynes and her high school sweetheart Ryan Godwin, who married in March 2012, according to The Kansas City Star.

Big Brother fans have rallied around Britney, who has been a fan favorite in both of her seasons on the show. Many have changed their names on Twitter to #PrayForTilly, and the hashtag has trended worldwide.

Britney recently tweeted about how much she appreciates the support of her fans:

Haynes appeared on Big Brother 12 in 2010, where she placed fourth, and returned as a coach for Big Brother 14 in 2012.