The 'Air Balloon' singer was snapped at the Pepsi MAX 'Art of Football' launch event, held at Victoria House in London.
Lily ditched the pretty frocks for a casual pair of blue-wash jeans teamed with a cosy jumper which featured white panels.
She did add a touch of luxe to her look with a navy quilted Chanel bag plus a pair of white pointed courts (and on a side note, check out how tanned her feet are!)
The mother-of-one even opted for fuss-free hair and make-up, scooping her locks into a messy bun and applying just a few lashings of mascara.
But it wasn't long before she ramped up the glam factor, as later that day Lily was spotted at the Topshop x Ashish autumn/winter '14 show in crystal-clad tracksuit bottoms.
Taking her love of Chanel to new levels, the songstress also wore three - yes three! - of the designer's 'pochette' bags at once.
And Lily later posted a snap of herself cuddling up to her new pair of light-up Buffalo platform trainers.
Goodbye low-key outfits, eh?
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