The 20-year-old admits that she tried to speak to the "Silver Linings Playbook" actor but was blinded by his eyes.
"The last time I was starstruck was when I met Bradley Cooper and I don't even remember what I said, that's how embarrassed I was. I wanted to say he was a great actor but he blinded me with his eyes," femalefirst.co.uk quoted her as saying.
Gomez also revealed that she is happier than ever since she became an elder sister. Her younger sister, Gracie Elliot, was born June 13.
"I'm a relatively new big sister but it's the best thing ever. My bliss is coming home and seeing her after I have been working," she said.