Who said that you are not supposed to wear white during winter? Unless streets are not full of snowy mess, which will make your beloved white garments suffer, go for it. And that's one of the good reasons for liking London - city, where it's possible to wear white pants without getting them dirty after few minutes (despite the really rainy days).
I'm getting used to looser pants and already got used to not wearing high heels. Flatness for life.
Pinstripe coat - Mango, fluffy top - Topshop, white pants - Monki, destroyed sneakers - Vans, bag - vintage, bracelet and necklace - Stop It Right Now x Jennifer Fisher