DANCING WITH THE STARS SEASON 34 - LET’S GOOOO! Robert, you are going to absolutely shine in the ballroom. I wish I could express the magnitude of how proud I am of you and everything you have achieved.

Robert Irwin is joining "Dancing with the Stars" season 34. He told "GMA" it's a dream come true to join the cast and said he's been getting advice from his Mirrorball champion sister, Bindi.

Season 33 of “Dancing With the Stars” attracted younger viewers, earning the show’s best adults 18-34 ratings in four years. The season also culminated with the highest total viewership with 7.95 million in over three years, and broke several voting records; the teams received 32 million votes in the finale.