Gwen Stefani – Hollaback Girl

Time flies! It’s been a whole 15 years since Gwen dropped her smash-hit ‘Hollaback Girl,’ and what’s more surreal, this iconic star just entered her 50s without even looking the part. She redefines flawless with her quaint looks and smooth skin.

Gwen admits she wears a lot of makeup (she was a makeup artist in her twenties), and even without it, she always looks so fabulous. Besides that, she maintains a strict skincare regime that makes her years fade away. Among her secrets is plenty of rest and a mostly vegan-based diet while staying out of the sun.

Christina Aguilera – Beautiful

Christina Aguilera is one of the many celebrities who has jumped on the no-makeup bandwagon and the outcome is just stunning. Who knew she was hiding so much natural beauty under her trademark dark lipstick and bold eyeliner?

In a set of photographs for ‘Paper Magazine’, the singer strips away the heavy makeup, revealing what fans call a “softer” version of herself. This brave move proves that there is no one definition of beautiful, a message that will no doubt resound with us all, especially coming from someone so well-known.

Katherine Heigl – Grey’s Anatomy