The 43-year-old captioned the photo: "OMG dad to be AGAIN :))) Brilliant. So so happy."
Peter Andre confirmed he and wife Emily are expecting their second child together
Singer Pete and Emily, 26, are already parents to two-year-old daughter Amelia, and Pete is also dad to son Junior, 10, and eight-year-old daughter Princess Tiaamii from his marriage to Katie Price.
The couple, who met in 2012, are fast approaching their first wedding anniversary, and recently opened up to HELLO! Magazine about their plans to have another baby.
The couple recently spoke to HELLO! about their baby plans
Pete explained: "When Amelia came along she created such an amazing bond with the other two and I'm like, let's go. If I see a baby in a pram it makes me think of no sleep and screaming! But I would like to have another child. I'm always keen."
Emily added: "I've just got to the stage where if I see a baby in a pram I'm like, oh, it makes me want to have another baby."
She also opened up about their parenting styles, admitting Pete is definitely stricter with the kids. "But he's also so much fun," Emily insisted. "He's nowhere near as strict as his dad or my dad, but he's got his definite rules, and the kids are so, so good."
Emily and Pete said "I do" in July last year, during a lavish ceremony at the idyllic Mamhead House in Exeter.
Congratulations to Pete and Emily!