The reality star opted for a very old school glamour look with her classic, structured strapless frock in a champagne colour, teamed with a slicked back updo.
Love the look? Well, this dress is from Beyond Burlesque. It's called the Chain Dress and is made from 100 per cent silk, with silver chain detail and a zip at the back.
Today's Lydia's birthday and she's been inundated with celebratory messages, cards and flowers from her castmates, friends and family. Just look at this photo she posted to Instagram! Lucky girl!
She told fans: "It's my birthday, it's my birthday, 25 today!! I'm officially 1/4 of a century. Do I still count as young?? So grateful for all my beautiful friends and family. Feel very blessed for another FABULOUS year!!!"
One person missing from the birthday celebrations is Lydia's boyfriend James 'Arg' Argent who is currently over in Austria training for the new series of Channel 4 reality show The Jump.
He did remember to send her a very sweet message, though, writing on Instagram: "Happy Birthday to my Best Friend, Lover & Soul Mate @lydiabright Gutted I'm away from home, love & miss you so much! Many more Bdays to celebrate together! 143 from Your Arg."
Arg also shared a cute throwback of the pair from their pre-fame days!