Bradley Cooper ran out of a press conference for his film Maestro to talk to a school nurse about his six-year-old daughter Lea.

The A Star is Born actor, 48, who has joint custody of the youngster, who he had with his ex-girlfriend Irina Shayk, 37, was 20 minutes into a promotional event for his Netflix film – in which he plays composer Leonard Bernstein – when he revealed he had to step out.

He said: “So sorry. The school nurse just called me. Can I just leave the room for a second to call them back and you can keep going. Is that all right?”

DailyMail.com, which revealed the call, added when Bradley returned, he said: “I have to go to the school to do something with Lea that needs… I have to apply something that they won't allow… I have to do it, so it’s like a 10 minute walk.”

The press conference incident came after nine-time Oscar nominee Cooper was pictured with his daughter in New York on December 15.

Days before, Lea made her red carpet debut alongside her famous dad at a Maestro screening also attended by his co-stars in the movie including Maya Hawke, Matt Bomer, Sarah Silverman and Carey Mulligan.

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Lea appears in the film as a younger version of Maya Hawke’s character Jamie Bernstein.

But after the glitz of the initial photocall with her dad, Lea was seen taking out a coloring book and sitting on the ground of the floor of the Academy Museum of Motion Pictures.

Footage from Entertainment Tonight showed the youngster busily scribbling before she looked up at Cooper and tried to get his attention by repeating: “Daddy!”

Cooper and Shayk dated for five years but never married, and he is now dating supermodel Gigi Hadid, 28, while the model has been romancing 46-year-old retired NFL star Tom Brady.

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