Lydia headed to the capital to attend the Retro Feast pop-up restaurant and despite the night not being your typical celeb bash, Lydia still looked as glamorous as ever in a unique white tiered dress.
The bubbly blonde teamed her pretty frock with a pair of nude peep toe heels and a cute clutch bag, while leaving her long extensions simply styled and cascading over her shoulder.
She also added a pop of colour with a slick of bright pink lipstick.
During the event, which was held in London's Embassy club, Lydia bumped into outspoken singer, Katie Waissel and the pair appeared to get along well, as they posed for a photo together.
Katie turned heads in a patterned jacket and trousers combination from River Island, which featured contrasting black sleeves and a black waistband. She layered her colourful jacket over a black crop top that displayed her trim and toned tummy and completed her look with a pair of nude peep toes, similar to Lydia's - although not as high!
Despite this friendship coming out of the blue, it seems Lydia and Katie may have known each other for a while, since Katie was spotted attending Lydia's 21st birthday at Gilgamesh in Camden, London back in 2012.
Katie is back in the UK now after spending a fair amount of time in the States last year, where she briefly married boyfriend Brad Alphonso. However, the marriage didn't last long and Katie called off the relationship 10 weeks later, saying that the American model wasn't right for her.
What do you think of Lydia and Katie's outfits? Let us know in the comment box below, as the best comment from across the website each week wins £50!
Read more: Angelina Jolie celebrates 38th birthday with Brad and kids
Read more: Avril Lavigne sports fierce leather jacket and heels as she visits UK