Unlike most actresses, it wasn't because of insecurities about her appearance.
She is a gentle, poetic soul and has a great love and affinity for music.
Because many of her feelings are vague and she cannot easily verbalize how she experiences life, music seems a natural language for Popplewell.
The foursome is completed by Georgie Henley, 10, as Lucy and Skandar Keynes, 14, as Edmund."It can be bizarre," says Anna.
"Today I had a normal day at school, then I went to Armani Couture and spent three hours looking for a dress to wear to the premiere, then I went home to do my essays."If my friends are jealous, they don't show it.
Anna Popplewell later turned her attention to her studies after completing her work on the Lion, The Witch, and The Wardrobe.
She was later admitted in Magdalen College, Oxford for her to study English literature.
She is also extremely romantic and often "in love with love".
Anna Popplewell has a soft exterior and tends to relate very personally and sympathetically to other people.
As an actress, you can’t hope for a more high-profile film role than an action heroine.
And despite having to fit A-level revision into breaks between takes, during 12-hour days in the 40C heat of a Czech summer, Anna enjoyed every perspiring minute of the adrenalin rush.