India, Feb. 18 -- Lady Gaga and Bradley Cooper's friendship remains as strong as ever, with the two continuing to support each other through thick and thin. A source told Life & Style that the Hangover star will play a key role at Gaga's wedding to fiance Michael Polansky, expected to take place later this year.

An insider told the media outlet, "Bradley's one of the top people on Gaga's list to have at her wedding, aside from family, he's that important to her. He wasn't just a mentor who believed in her for their movie, she feels a huge kinship with him."

The source added, "will have an open invite to bring a plus one so odds are (his girlfriend) Gigi Hadid will be there with him and Gaga is totally cool with that. She thinks they're ...