Actor Robert Downey Jr. made another heart-warming gesture for a fan.

The “Iron Man” star invited a 7-year-old fan, named Daniel, for the premiere of “Captain America: Civil War.”

Daniel has cystic fibrosis and has been bullied at school because of his illness. His mother, Vicky Keyte, said Downey is his son’s idol, Today wrote.

Keyte posted a photo of Daniel and expressed his son’s wish to meet his idol – Robert Downey Jr., a.k.a Iron Man. She mentioned that Daniel manages to pass the bullies in his school by telling them that he has an extra special port in his chest much like Iron Man’s arc reactor.

Keyte hoped that Downey would reply to help Daniel get through his stay in the hospital.

And Downey did.

The actor shared on his Instagram account a photo of himself in a Tigger costume and sporting a pair of aviator sunglasses to cheer up Daniel.

The actor captioned his photo: “Mr. Stark here. This is for Daniel who was having a rough day recently. When I’m in the dumps, I’ve found this little getup to be helpful.”

At the end of his note, the actor asked Daniel: “P.S. Would you like to come to the LA premiere of Captain America: Civil War as my guest? If so, have your people call my people. All the best.”

In response, Keyte thanked Downey and said Daniel has already asked to have a tuxedo fitting for the “Civil War” premiere.

Later that day, she posted a video that shows Daniel’s reaction to Downey’s message.

This is not the first time the “Avengers” star came out of his way to cheer up a kid fan.

In March, Downey personally delivered a 3D printed prosthetic arm to 7-year-old boy, Alex Pring, who is missing his right arm. The robotic arm has a red and gold Iron Man armor-themed design. It was made by Limbitless Solutions, a volunteer group started by Albert Manero, a University of Central Florida engineering PhD student, to make robotic arms for kids for free, CNN noted.

“Captain America: Civil War” will hit theaters on May 6, 2016.