Robert Downey Jr. Dresses Up as Tigger the Tiger to Cheer Up Boy With Cystic Fibrosis, Invites Him to Movie Premiere: Photo

Hero on-screen and off! Robert Downey Jr. put his celebrity status to good use on Friday, Oct. 23. The Oscar-nominated actor dressed up as Winnie the Pooh's best bud Tigger to cheer up a sick boy who has cystic fibrosis.

"Mr. Stark here. This is for Daniel (@envy_coatings) who was having a rough day recently," the actor, 50, captioned via Instagram. "When I’m in the dumps, I’ve found this little getup to be helpful."

In the snapshot, the dad of three crouched down in the orange and yellow tiger costume, as if he were bouncing on his tail like the character, and put up his paws. He posed barefoot on grass and wore aviator sunglasses.

"P.S. Would you like to come to the LA premiere of Captain America: Civil War as my guest?" Downey Jr. continued. "If so, have your people call my people. All the best." (RDJ plays Iron Man in the Marvel franchise. The Captain America movie comes out in May 2016.)

Robert Downey Jr.
Robert Downey Jr. Gabriel Grams/WireImage

Needless to say, Daniel's parents were overwhelmed by the star's shout-out and generosity. The company Envy Coatings, which Downey Jr. cited, reposted his Tigger pic. Their Instagram page also appeared to include a response from Daniel's mother.

"I want to say a huge thank you to everyone that helped to make this possible and a massive thank you to @robertdowneyjr for Daniels invite to join you in LA, we physically can not believe it and can't ever imagine a way to thank everyone enough," the message read. "I will keep everyone updated on the build up to the big day on Daniels progress and his day to day going ons and of course his tuxedo fitting that he has asked for today as he wants to fit in like a real star."

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