On the same night the final episode of the season aired, the co-stars were spotted en route to meet with pal Lucy Mecklenburgh and Billie's sister Sam Faiers for some drinks ahead of the traditional end-of-series bash.
Jess showed off her toned legs (and tan) in a flirty and plunging short dress - and nearly had a bit of a Marilyn Monroe moment thanks to a gust of wind... though with legs like that we probably wouldn't mind!
Billie, meanwhile, stood out in a neon dress that highlighted her figure. You never would have guessed it only took her 30 MINUTES to get ready!
She tweeted: "It's a record! Hair, make up, outfit, out the door and ready in 30 minutes for the #TOWIE wrap party!!"
Jessica also tweeted a picture of herself and Billie in their car, saying: "Me & @BillieFaiers on our way to meet the other 2 Pringles @SamanthaFaiers @lucy_meck #cocktails."
Unsurprisingly, plenty of fans were quick to offer their compliments, with one telling Jess: "You look like a Spanish Señorita #goegeous Jess!
Last night's season finale revolved around Jess' parents Big Mark and Carol Wright renewing their wedding vows on their 30th anniversary, and singer Jess kicked off proceedings by belting out 'At Last' as her mum walked down the aisle accompanied by Nanny Pat.
And after a difficult few weeks for Jess, fans were no doubt happy to see her smiling again during the episode when she told boyfriend Ricky Rayment that she wanted to give their relationship another chance.
Responding to fans on Twitter after the show, Jess said: "I hope I'm very happy in 30 years like my mum and dad are. At the minute I hope that happiness is with Ricky."
Missing TOWIE already? Watch the series nine highlights! (Warning: contains swearing)