Billie has been a castmember since the first series, making her debut on screen as the sister of now-ex-co-star Sam Faiers. Little Nelly arrived in the world in July 2014.
Nelly's dad is Billie's fiance Greg Shepherd, who rarely appears in the show as he prefers to stay away from the limelight.
TOWIE returns to ITVBe for its 17th series soon.
Ten reasons why we want to be on TOWIE!