Bindi Irwin, Chandler Powell Celebrate 4th Engagement Anniversary: A Timeline of Their Wildlife Love Story

Steve Irwin's granddaughter Grace Warrior pays sweet tribute to mum Bindi Irwin at Australia Zoo on the wildlife warrior's 25th birthday

Robert and Bindi Irwin share heartbreaking video of their late father Steve describing his relationship with their mother Terri as 'love at first sight' as matriarch turns 59

Bindi Irwin praises 'extraordinary' mother Terri for her 'incredible strength and guidance' on her 59th birthday - as she shares heartbreaking footage of late father Steve