What made Amber Heard cry while on outing with Johnny Depp?

Amber Heard was seen fighting back tears while arm in arm with a recipient, crying as she’s overcome with happiness.

Actress Amber Heard became emotional while distributing hearing aids to people in need, before her husband Johnny Depp’s band Hollywood Vampires performed at the Rock in Rio music festival in Rio de Janeiro.

Johnny Depp, right, puts a hearing device in the ear of a child while his wife, Amber Heard, left, puts a bracelet on her arm, in Rio de Janeiro. (AP)

Heard, 29, was overwhelmed with the gesture and started crying holding a girl’s hand, who was given the aid by Depp, reported Us magazine. “There’s nothing quite like the feeling of seeing that moment where you’re testing the hearing aid and testing it... And that moment where they light up as they hear. That moment is everything,” Heard said.

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The 52-year-old Black Mass actor’s all-star band, The Hollywood Vampires, which also features Alice Cooper and Aerosmith’s Joe Perry, announced their involvement with Starkey Hearing Foundation in August.

Depp — who married Heard on Feb. 3, 2015 — echoed his wife’s sentiments, saying, “To be able to help these kids, help these people, is amazing.”