The TOWIE star usually favours glamorous party dresses for the red carpet, but on Tuesday evening (3 September) she donned her denim to support Jeans For Genes Day.
Jessica looked fab in her blue jeans teamed with a cream camisole top, cute jacket and sandal heels. We're loving the neon pink mani/pedi as well!
Ahead of arriving, she tweeted: "Looking forward to supporting @JeansforGenes tonight #greatcharity."
Jeans For Genes Day raises money for Genetic Disorders UK and aims to change the world for children with genetic disorders.
Jessica was without boyfriend Ricky Rayment last night she, but she did find two rather hunky looking men on the red carpet! The 'Come With Me' singer posed alongside the Jeans For Genes models (yes, their jeans are spray painted on!) and their campaign logo.
We don't think Ricky will mind though, it's all in the name of charity!
Jessica had company at the event in the form of her younger sister Natalya, who just turned thirteen, and her mum Carol.
Posting a picture of herself and Natalya inside Jewel Bar, where the party was held, she said: "Tonight at the @JeansforGenes party me & my sister @NatalyaWrightx who I love more than the world!!!!"
After the glam party, which was also attended by stars including Imogen Thomas, Danielle Peazer, Amber LeBon and Kimberley Garner, Jessica and her sister headed to Burger and Lobster in Soho for a spot of dinner.
Jess shared a picture of herself wearing an apron provided by the restaurant for those dining on lobster – and, unlike us, managed to still look rather chic!
Check out all the stars at the Jeans For Genes Day 2013 launch:
Copyright: WENN James Shaw
Watch Jessica's music video for 'Come With Me' below: