Has three brothers: older half brothers (same mother) Danny Masterson and Christopher Masterson; older brother Jordan Masterson. Will Masterson is not biologically related to Alanna, but since the entire family and remarriages are close he is considered like a brother.
Best friends with actress Hilary Duff. They're so close, they even got matching tattoos.
Alanna's father Joe Reaiche was a professional Rugby League Player for 6 years in Australia with the Sydney Roosters in the NRL- National Rugby League Competition.
Is in a relationship with Brick Stowell. They have a daughter together.
Gave birth to her 1st child at age 27, a daughter named Marlowe Stowell on November 5, 2015. Child's father is her boyfriend, Brick Stowell.