I have to agree with Nostrum, that pinstripe blouse is the one that looks best on you. It looks pretty gorgeous, in fact. I am a pear shape myself, and what I've found over the years is that the best look you can get is the one that emphasizes the bosom. That's exactly what makes the pinstripe blouse work so great - the frills on the chest ans puffy sleeves balance out the rest of the body.
Something that has also worked for me is patterns. I now try to stay away from plain colour, at least on the front. Patterning helps a lot in defining shape, you can start with simpler prints in soft colours if you're nervous about it, but I personally like to go with bold patterns in bright colours

Another great thing for us pears are the loose V-necked empire waist shirts, like this one, from Macy's:

I was really happy when I found this worked for me, because dresses shaped like this also look really good on us! I never wore any skirts because I felt like a hot air balloon in them, but I can wear these dresses and feel like a princess! You should give it a go

Stay away from over-exposed shoulders. Personally, the thinnest I'll go is the cap sleeve, if by any chance I have to go strapless, I wear a shrug.
You have a really beautiful facial structure, and if you want to keep the length, try layering and a side swept bang to frame you pretty face and have instant and effortless sexyness!
Please forgive my intrusion, these are merely my two cents based on my personal experience.
