Gwen Stefani Celebrates Son Apollo’s 9th Birthday By Sharing Group Photo With Blake Shelton

Gwen Stefani’s son, Apollo, is growing up so fast! On Tuesday, the singer shared a loving tribute to her nine-year-old son on his birthday, featuring an adorable photo of her smiling next to her youngest son and husband Blake Shelton. “My world is so much bigger with u in it, happy birthday, apollo. I love u so much,” she captioned the post. The No Doubt singer shares her three sons, 16-year-old Kingston, 14-year-old Zuma and Apollo with her ex-husband Gavin Rossdale.