Actress Jennie Garth is writing her first memoir. The star will chronicle her time on Beverly Hills, 90210, her relationships with her co-stars and her new life as a single mum following her divorce from Peter Facinelli in Deep Thoughts From a Hollywood Blonde. Announcing her literary news, Garth says, "The past few years have been full of changes. Now I'm on my own with my three kids, and I just crossed that tricky invisible line into my forties. Maybe because of all these things or maybe despite them, I feel like another chapter in my life is just beginning. "This book is my story about where I've been and where I'm headed - and what I've learned along the way." Deep Thoughts From a Hollywood Blonde is set to hit stores in April (14). Garth is not the only Beverly Hills, 90210 alum to release a memoir next year - Jason Priestley's book will hit stores in April (14). Their co-star Tori Spelling has penned three autobiographies since 2008's sTORI Telling.