Lily is attending the annual music ceremony in London tonight but has already had a quick turn on the carpet before walking it for real later.
Yesterday, Lily showed off her Buffalo trainers, which are part of the brand new Topshop collaboration with London-based designer Ashish Gupta.
But that was a snapshot taken at home - and now they've had their first proper outing!
Teaming them with a pair of blue skinny jeans, a black top and cardigan, Lily got a friend to film her as she pranced around on the red carpet at London's O2 Arena.
Posting the clip on Instagram, the mum-of-two simply commented: "Lolz."
Last night, Lily looked super-chic in a long black gown at the Elle Style Awards.
Speaking to Reveal, she said: "This week has been a crazy week, I had the BAFTAS, this awards and then the Brits tomorrow.
"It's about spending as much time with my kids during the day as I can, then coming out at night time. I have a lot of help!"
Additional reporting by Kelly Jenkins.
Watch Lily's amazing trainers in action here!