You look really good in the flowered dress, so I'd go with that one. One of the smaller blag bags, the black belt, and the red and black boots w/o tights would look amazing, imo.
hmmmm...I am not in love with the black/red floral dress for that event. I mean, I really like it on you and all but it seems like something so conservative and not party-like that could be worn to work. I guess that's fine and all but I think your eclectic style should be served better.
If you were to wear the floral dress, then I'd wear with the Fendi belt (awesome!), the Pollini bag (awesome!), and I am not feeling the idea of black knee-high boots or the black and red ankle boots you posted. I would like black ankle boots with red tights OR red ankle boots or heck, do you have some turquoise shoes lying around?
I actually like this dress a lot better. I'd carry the Fendi, some chunky necklaces or earrings, a bangle, and some hot open toed shoes.