The conservationist turned 23 on Saturday and was surrounded by her daughter and loved ones.
Terri's son-in-law, Chandler Powell, also sent her birthday wishes.
The conservationist found the sweetest way to return to Instagram.
ET also spoke with Robert Irwin about 'Crikey It's Shark Week' airing July 11 on Discovery.
ET spoke to Robert Irwin about his sister Bindi as a mom, memories with his late date Steve and his upcoming 'Shark Week' special.
Robert Irwin previously told ET that Bindi is prioritizing time with her family.
Robert Irwin can't say enough great things about his older sister, Bindi, becoming a mother.
The new mom opens up about the importance of discussing mental health.
The couple tied the knot in March 2020.
The conservationist and her husband, Chandler Powell, welcomed their daughter in March.
The new mom shared a throwback photo of herself as a baby that resembled her daughter.
Terri and Steve Irwin were married 14 years before his death in 2006.
It doesn't get much cuter than this!
