The TOWIE star dressed to impress in a floor-length scarlet frock as she joined the likes of Pippa Middleton, Hugh Grant and Alesha Dixon at the charity event in London.
Love Jess' look? Well you can snap up her EXACT dress!
Showing she's her own best model, the starlet opted for the Blair Red Lace Detail Maxi Dress from her Lipstick Boutique collection, available pre-order now for £85.
Essex star Jess is an ambassador for British Heart Foundation this year, helping the fundraising goal of reaching £1 million for new life saving heart research. Since 2009, the BHF's Wear It, Beat It campaign has raised more than £6 million to fund research for heart and circulatory disease.
Ten reasons why we want to be on TOWIE!