The former TOWIE star started her evening at the Stradivarius cocktail party, before we spied her mingling in the VIP section over at Cosmopolitan's FashFest.
No wonder she posed with a big sign saying: "Cool girls never sleep!"
And how fab did she look at both events?
For the cocktail party, the Results with Lucy owner went for a sophisticated and super smart look, teaming black shorts with a soft grey tee and gorgeous fitted jacket. We're having TOTAL shoe envy as well.
She then did a quick change before heading to Old Billingsgate for Cosmo's FashFest, switching into a gorgeous patterned dress with blue heels. Love it!
Lucy will no doubt be hitting the FROW over the next few days getting inspo for her own clothing line and Lucy's Boutique brand, which has been a huge success in the four years since she launched it.
As well as designing her own clothing range, Lucy's currently the face of Boux Avenue's new lingerie collection and looks AMAZING in the photos, which you can check out in full over here (warning: will likely cause envy!)
10 reasons why we want to be in TOWIE: