She's the actress who shot to fame as Rachel Green and cemented her place in our hearts with her marriage with Brad Pitt. Jennifer Aniston is a woman whose, career, love life and struggles for a baby have been followed in minute detail for the last 20 years. As the star turns 46 today, we look back over how she became Hollywood's favourite sweetheart. Scroll down for video Jennifer Aniston has spent the last two decades living under the public's gaze. As the actress turns 46 today, FEMAIL looks back at her biggest highs and lows. (Pictured: Jennifer  at the 30th Annual Santa Barbara International Film Festival in January)

During her time on the hit comedy show FRIENDS Jen became famous not just for her hilarious character Rachel Green, but for the '
Rachel Green' haircut.