Ashley Greene has shot her first pictures as ambassador for Avon's affordable beauty brand Mark.

The 'Twilight' actress - who has stepped into the shoes of 'The Hills' star Lauren Conrad, who formerly fronted campaigns for the make-up company - was given the chance to test a selection of products, and has revealed she can't live without mascara, foundation and lip gloss on a day-to-day basis.

She said: "I have six movies coming out in the next two years and my career does keep me busy so every day I wear concealer, mascara and lip gloss. I like the Mark's Save The Day anti-acne concealer stick and the Light Bright lighten and de-puff eye gel."

The 23-year-old beauty hopes to encourage young women to "believe in themselves" as part of her new role as brand ambassador.

She added: "I was initially drawn to Mark because of the fantastic products but also the empowering message to encourage women to make their mark in the world has helped solidify my decision.

"As Mark's brand ambassador I am excited to encourage young women to believe in themselves and make a difference."