The model - who gave birth to daughter Ariana Siena last year - was snapped attending a gifting event in the capital and decided to cover up her famous curves.
No doubt due to the chilly British weather, Imogen ditched the low-cut tops and figure flashing ensembles she is often seen wearing and kept warm in a grey polo neck jumper.
She also donned a pair of tights with her leather mini skirt and black ankle boots and she tied her long brown hair up into a high bun.
The former Big Brother contestant has been making the most of her social life recently, in between embracing motherhood.
Last week she turned heads in a nude coloured lace dress, which flattered her figure and flaunted the results of her post-pregancy fitness regime.
In keeping with her quest to achieve an ideal post-baby body, Imogen has now also revealed that she will be starting Bikram Yoga.
She wrote on Instagram recently: "Starting back bikram yoga in the new year to achieve this bum again! I was going 5 days a wk....I always push myself #flexibility #hot #sweat #results #itcanbedone".
As well as her frequent workouts, Imogen is bound to be even busier in the coming weeks, since Ariana will be turning one year old next month and we can imagine she will be spoilt by her doting mum.
The Welsh star is apparently making a return to our TV screens soon too.
However, details of her BBC3 project is being kept secret for now.
What do you think of Imogen's daytime look? Let us know below, as the best comment from across the website each week wins £50!
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