United Kingdom, March 27 -- Ariana Grande supported her brother Frankie Grande ahead of his return to Broadway.

The 32-year-old pop star offered her sibling some crucial vocal advice before he began his run in Titanique on Broadway, and Frankie has now revealed how his famous sister helped him through a pre-show scare.

Frankie, 43, told E! News: "I asked her vocal advice. I did because I was having trouble because I had a sinus infection."

The actor - who originated the role of Victor Garber during Titanique's Off-Broadway run - had been steaming for up to an hour and a half daily in a bid to clear his congestion, but Ariana quickly stepped in with a more practical solution to his problem.

Frankie - who previously appeared as a contes...