Lucy Mecklenburgh and Mario Falcone ignore cheating reports to party with TOWIE co-stars at engagement do
The fashionista, 20, wore a dramatic one-shouldered black embellished gown while her fiancé, 24, donned a sharp black suit.
Lucy and Mario held hands as they made their way to the bash at local Brentwood haunt Sugar Hut, which was filmed for the new series of the hit ITV2 show.
The party comes just days after Now revealed that Mario had been wooing 22-year-old shop worker Jade Thompson behind Lucy's back.
He sent her a series of flirty private Twitter messages - the last of which she received just six weeks before he proposed to Lucy.
'I'd be devastated if my fiancé did that. He can't love her,' Jade tells us.
'I've been getting messages from other girls saying he's been in touch with them, too. He's a rat.Lucy can do far better.'
When Now contacted Mario's rep, he insisted the star didn't send the messages.