Sienna Miller insists she doesn't "put on a look" every day.
Sienna Miller
The 'Burnt' actress - who has three-year-old daughter Marlowe with former fiance Tom Sturridge - mainly dons "nice jeans and great jumpers" because she prefers to be casual when taking her little girl to nursery.
She said: "I wish I could say I'm always styled out. I buy nice jeans and great jumpers, but that's sort of what I wear everyday because I'm a mother and I'm doing a school run and it's 7:30 in the morning. I'm not going to put on a look."
Despite regularly featuring on best-dressed lists, Sienna insists she isn't a fashion expert and doesn't often attend shows.
She said: "I'm not really a seasoned fashion week person contrary to popular belief."
And the 34-year-old beauty joked she is "in denial" watching runway shows.
Speaking backstage at Ralph Lauren's AW2016-17 runway show, she told E! News: "I'm in denial because the 20 year olds that can model wearing it is a different thing."
Sienna picked out one outfit she was particularly impressed by.
She exclaimed: "There was this black velvet jumpsuit that was backless. It was amazing!"
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