I've written before about the often disappointing design output from Bravissimo's clothing range, but this Kingfisher satin dress (£65) is quite beautiful - and remember that blues and greens are the most flattering colours for pale complexions. Being by Bravissimo it is cut to fit perfectly over the bust (you'd want the 18 'Super Curvy' size), but the tailoring detail is flattering to the rest of the body too. The waist is defined by the jewelled applique, and that pleating over the tummy is generous and flattering to your lumps and bumps. Which is not to say you won't want to wear Spanx - not to reduce your size but just for smoothing. Because of the detailing at the waist it's keep jewellery simple and silver. Some nude (pale tan) heels or heeled sandals would look best.
I know I'm becoming predicable in my love of a dotty frock, but I really think this one shows why. Patterns go in and out of fashion - currently the newest trend is for tribal prints - but the simpler the pattern, the more longevity it will have. These spots are fun and by breaking up the expanse of solid colour they are flattering too. I really think this is a pattern that won't date because it's so simple. The frock itself is on the expensive side - it's £89 from East - but it's fearsomely flattering to a curvy girl. The crossover neckline will accommodate larger boobs (you can add a vest or camisole in your chosen colour accent if it gets too boobalicious), and the plating and cut of the skirt will smooth over lumps and bumps while giving the impression of an hourglass silhouette. There is a matching camisole, but I wouldn't - matchy-matchy feels matronly. Instead team this with a close fitting cardigan in a fine knit. I think a sherbert colour (like a pastel but with more guts) would work beautifully: perhaps sky blue or pink. You can then work that colour through to your shoes and jewellery.
Lastly, although I really do think that shorter legs do better with shorter dresses, I know that people's sensitivity to their body imperfections can be all consuming - so I offer you a maxi dress. It's £35 by Next, and unlike most maxi dresses it's glamorous enough for a dressy event and you can wear a bra with it. It's possibly going to need a vest or camisole underneath because of that plunge neckline, so I'd go with black accents including flat black sandals as here. The empire line silhouette elongates the legs and draws attention to the fabulous boobs.