Selena Gomez starstruck by Rachel McAdams

London: Pop star Selena Gomez "froze" when she ran into 'True Detective' star Rachel McAdams at an acting class.

The 23-year-old 'Heart Wants What It Wants' hitmaker said she was left completely starstruck after an unexpected

encounter with McAdams, 36, reported Female First.

"Rachel McAdams and I actually walked into the same acting lesson. She's so pretty without make-up! I didn't know

what to do. I just froze," she said.