See the beautiful and heartfelt message below!
The GRAMMY-winner included a photo of herself dressed in Agent Provocateur, cradling her growing bump alongside the sweet announcement.
Beyoncé and Jay Z, who married in 2008, became first time parents in 2012 upon the arrival of their daughter Blue Ivy. Last year, the singer revealed to Garage magazine that becoming a mother was the proudest moment of her life.
She has also maintained that Blue always comes first, telling ABC News, "I am very protective. I just want to make sure that she can have a healthy, safe, normal life. In the back of my mind, she's my priority. And life is completely different now. So I'm – I feel really, really just lucky that I can still do what I love, and now have a way bigger meaning. And that's to be her mother."
Revealing plans to add to her family one day, the former Destiny’s Child star admitted she hoped to have more children. "I think my daughter needs some company," she said. Talking about her experiences of pregnancy first time around, the Grammy-winning-celeb gushed, "Being pregnant was very much like falling in love. You are so open. You are so overjoyed. There's no words that can express having a baby growing inside of you, so of course you want to scream it out and tell everyone."