'I love you beyond description,' the conservationist wrote to her mom.
Only ET has your first look at 'Crikey! It's a Baby!' ahead of its streaming premiere on Discovey+ on April 25.
The conservationist and her husband, Chandler Powell, welcomed their daughter last month.
Terri became a grandmother after her daughter gave birth to her first child on March 25.
The grandma-to-be can't wait to meet her daughter's baby girl!
ET chatted with the Irwin family about the new season of ‘Crickey! It’s the Irwins!’ debuting Feb. 7 on Discovery+.
The new season of 'Crikey! It's the Irwins' debuts on Feb. 7 on Discovery+.
Steve and Terri Irwin took the pic while expecting their son, Robert.
The Australia Zoo created a video of the late Steve Irwin marveling at his young son.
ET’s Lauren Zima video chatted with the Irwin family from their Australia Zoo last month.
'We miss him so much.'
'Life is constantly changing. Love is forever.'
The 16-year-old and his mother, Terri Irwin, spoke about how koalas are being affected by the fires.
The Irwin family celebrated Robert's sixteenth birthday with some touching messages on social media.
