Article continues below advertisementKaty Perry couldn't hold back from flirting with boyfriend Justin Trudeau in public.The singer, 41, was caught winking at her man while supporting him at the World Economic Forum in Davos, Switzerland, on Tuesday, January 20.Perry stood in The Female Quotient lounge to cheer on Trudeau, 54, during his speaking arrangement.Article continues below advertisementSource: @femalequotient/InstagramJustin Trudeau spoke at an event in Switzerland.The former Canadian Prime Minister was all smiles on stage with his microphone when he caught a glimpse of his woman.