The ex-TOWIE star wore a colourful print tunic available at her Bella Sorella store, £47, to attend a Pimms summer garden party in the capital, followed by some fun at Whiskey Mist.
While Lydia teamed her tunic with skinny jeans on her clothing store's website, she showed off its versatility by choosing to wear it with just her tanned legs last night, for a gorgeous and summer-appropriate look. Now, we just need the sun to come back!
The fashion designer, 22, also gave her look a quirky twist by sporting some seriously bling ear jewellery, tweeting an up close shot for her followers.
Lydia will be making a one-off return to ITV2's The Only Way Is Essex on this evening's (19 June) episode, where she'll give some words of comfort and advice to best friend Lucy Mecklenburgh.
Her cameo appearance was confirmed in the end credits of Sunday's episode, when she met an upset Lucy at a restaurant. Poor Lucy's had plenty of drama in her life lately – including that split from ex-boyfriend Mario Falcone – so no wonder she wanted her BFF to lean on.
We'll definitely be tuning in tonight to see what happens.