I agree with PP if you're looking for chic and exciting, Hobbs and Phase 8 are not the places for you. I'm an hour glass 12, 30yo and a big fan of a midi. My go to outfit is midi dress or skirt, trainers and a jacket of some kind, or tailored trousers.
That first dress is foul and old fashioned, I'm afraid.
The blue is nice, but not stylish. Colours gorgeous though and Could wear with white trainers but wouldn't be like chic.
Try midi dresses, wrap or shirt dresses from Zara (though I find a lot of their stuff to out there even for me at times. Hit and miss) try also Anthroplogy, And Other Stories, Biden has some edgier stuff sometimes, other times it's a bit mumsy but beautiful and classic. Shame warehouse and oasis have gone as they were my staple places to shop. French connection isn't as extortionate as it used to be, so try there too. ASOS is a good place to gather ideas!
Good luck I'm sure you'll find something fab and look amazing! X