Help dress me for Christmas!

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I'm usually ok at this but am feeling completely uninspired for my party outfits this year. The people don't mix so it can be the same thing and is more nice bar then club than posh ball or party.
In my head I was all for leather look skinnies and drapey top but I cannot find a pair that fit right anywhere. So that idea is out.
I'm early thirties, short hair, size 12, fairly straight but decent boobs (32ff on bra intervention). Legs are good- I like short. Tend to go more for shift or swing dresses as have a bit of a tummy after 2 babies. Can get to all major shops (except John Lewis and House of Fraser- grrrr!) Am more Cos, & Other Stories, Mango, Zara kinda girl than Joules, Boden, Fat Face etc. Not fussed about colours- look good in red or blue. Love animal print and sparkles. Have lots of shoes already.
I want to look young and hot. And only spend about £50. Any ideas?

Bugger that was long sorry!

www.lipsy.co.uk/store/glamorous/glamorous-sequin-bodycon-dress/product-is-eb05729_031 this kind of thing?

Like the sparkles but is too tight. Tummy doesn't do bodycon! Thanks anyway

Too high a neckline?

www.frenchconnection.com/product/Woman+Collections+Dresses/71EEA/Riot+Rose+Dress.htm

Too much?

www.asos.com/Boohoo/Boohoo-Sequin-V-Neck-Shift-Dress/Prod/pgeproduct.aspx?iid=5893610&cid=8799&Rf981=3677&Rf-800=-1,50&Rf1012=4458&Rf989=6408,6332,6333&sh=0&pge=0&pgesize=204&sort=-1&clr=Multi&totalstyles=152&gridsize=3

Slightly looser version of what Donge has suggested a little over budget though. It comes in red and silver too

www.marksandspencer.com/sequin-embellished-shift-dress/p/p22397381

Thanks katespade for the ideas. Not the French Connection one- neckline is too high.
I have dithered over that ASOS one. It is very me. The just doesn't move well in the video. I might order it anyway.
It has however led me to this:
m.asos.com/mt/www.asos.com/first-i/first-i-sequin-kimono-sleeve-dress/prod/pgeproduct.aspx?iid=6032959&clr=Multisequin&SearchQuery=sequin+kimono+dress&pgesize=28&pge=0&totalstyles=28&gridsize=2&gridrow=1&gridcolumn=2
Which I very much like but unsure if a medium would be OK size wise????

I was just going to suggest the Asos kimono one too, I've just ordered it in silver and hoping the medium might fit!

Oh and I live 5 mins away from an M&S so might pop up later!