United Kingdom, April 23 -- Robert Irwin is "over the moon" that his "dream" of being on 'Dancing with the Stars' has become a "reality".

The 21-year-old conservationist has said it is an "honour" and a "privilege" to have been asked to take part in the 34th season of the hit ABC and Hulu reality show because seeing his sister Bindi - who won the competition in 2015 - dance with her pro partner Derek Hough in the ballroom at age 11 made him want to do it.

Asked by Derek - who now serves as a judge on the show - how he feels to be taking part, Robert said: "I cannot tell you what an honor, what a privilege it is to be joining this season.

"I remember being a little 11 year old - little 11 year old Robert about this big with a little bow...