Pink is worried she will have to buy a “training bra” for her daughter soon.
The singer gave birth to her first child with her motorcross racer husband Carey Hart in June 2011.
Although little Willow is yet to celebrate her second birthday, her mom is already amazed by how grown up she seems.
“Our lil one pooped in the toilet and had her first play date without me. Next ill be gettin her braces and buying her a training bra. NOOOOO (sic),” she wrote on her Twitter page.
Willow also seems to be getting to grips with literacy and numeracy.
Pink took to the social networking site to share her pride with her fans.
“My daughter can say AWESOME. And count to ten. That makes her AWESOME (sic),” she posted.
The 33-year-old and Carey have settled into family life well and put their brief split in 2008 behind them.
The star recently gushed about her daughter and expressed her desire to have more children.
“Willow is heavenly. She’s changed the way I look at life,” she smiled.
“She’s funny and fiery, with Carey’s looks and my attitude. It’s been amazing watching my man stumble awkwardly into love with his baby daughter. I’d love to have more kids. I’d like a big, dysfunctional basketball team full of them!”