Need a dress for a charity black tie dinner

[Racheyg]

I'm organising a charity fundraising dinner at lords cricket ground. Really want to look nice so guessing a maxi dress.

Slight problem, I have tattoos on my arms so needs to have sleeves.

I'm. 5ft 4 light brown hair carry my weight round my middle, size 10/12 inverted triangle shape.

Ideally don't want to spend any more than £80.00 I have attached the picture of a dress I brought but returned as I thought it highlighted my tummy area (dress was a 10 and I don't think did me any favours, 12 too big)

Help greatly appreciated. I have seen this dress but unsure

m.dorothyperkins.com/en/dpuk/product/metallic-rouched-maxi-dress-7055739