"Adoption has forever changed our family for the better," Rue told ET on Saturday. "Adelaide is a dream come true and we all feel incredibly lucky and grateful."
Following the exciting news, Rue took to social media to share the couple's first family photo with Adelaide, which also features their 3-year-old daughter, Talulah, adorably dressed in a blue-and-white starry frock and sitting on daddy's lap.
"I'm SO in love and grateful!” she tweeted. "Adelaide Rue Price joined our family and we are forever changed for the better!"
I'm SO in love and grateful! Adelaide Rue Price joined our family and we are forever changed for the better! ❤️ pic.twitter.com/RON9TC1AAG
In more baby news, Pink is welcoming her second child with husband Carey Hart. The couple, who are already parents to 5-year-old daughter Willow, announced the news earlier this month with an adorable snapshot of the "Just Like Fire" singer holding her baby bump with her mini-me by her side.