She shared the news with her fans via microblogging website Twitter.
"Beautiful news to share with you all. Today (Wednesday) is my first day as a CoverGirl! See what happens when you let the light in? (sic)" she tweeted.
The 28-year-old's advertising campaign will be out in Spring 2014, reports femalefirst.co.uk.
"In addition to music, I've always considered makeup to be a powerful creative avenue of self-expression. I'm honoured to partner with CoverGirl and share more colors and textures of my approach to beauty to inspire my audience," Perry said in a statement.
The "Roar" hitmaker had earlier launched her own eyelash and fragrance ranges but CoverGirl will be her first cosmetic partnership.
--IANS (Posted on 17-10-2013)