Aged just 25, the actress said that she has also noticed small changes in her face herself but refuses to have anti-wrinkle injections because there is not enough research available.
'Living in a society where there's so much attention given to age-defying products, I'm really aware of how my face is changing, even at my age... because once you start, I don't think you can stop,' she told Glamour magazine.
'A good friend recently told me that I really had to whiten my teeth and I thought to myself, 'That's not wrong', but people I don't know so well have told me I need Botox, and those people I've ignored because although it's accepted now, the research isn't there yet.'