In scenes to be aired in tomorrow night's TOWIE series finale, the glamorous reality star takes to the mic and sings while being accompanied by a cellist.
Jessica, 27, wore a cream floor-length gown to the outdoor wedding vow renewal and had her long brunette hair pinned half-up and half-down.
This will not be the first time we've seen Jessica singing in TOWIE. In the first series, she was the lead singer in girl band Lola and she has since gone on to have her own solo career.
Last September, Jessica released her song 'Dance All Night' and this was followed up with her Pussycat Dolls-esq single 'Dominoes'.
The vow renewal certainly looks set to be a lavish one. We can't wait!
Watch Jessica's music video for 'Dominoes' below.
Have you enjoyed this series of TOWIE? Tell us below, as the best comment from across the website each week wins £50!