Cameron Diaz celebrated her 41st birthday yesterday, so we're taking a trip down memory lane and reminding ourselves of her ever-changing beauty look. With her blonde locks and piercing blue eyes, it's not surprising that she started out modelling before she became everybody's favourite funny girl. While she's dabbled with different hair hues over her career, she tend to sticks to her water-rimmed eyeliner and bold lipstick on the red carpet, but off-duty, she's all about the relaxed hair and fresh-faced look. Step inside and watch her beauty evolve. What's your favourite look?