Gosh, do you know what? I don't actually 'do' sexy. I just wear my normal clothes. I wouldn't know how to dress sexily if my life depended on it. I certainly wouldn't dress for a meet.
I do have pretty underwear, but I don't think any of it is black, shiny and certainly no leather. 
I shall await others responses.  :twisted:  
      I really struggle with this as it is the more difficult it is to get "sexy" underwear, instead bras are like slingshots!
M&S have some nice underwear.
You can't go far wrong with a good plain black corset, that can be matched with a nice jacket, trousers or a nice sexy skirt.  
      I personally think there's nothing sexier than smart.  A lady in a trouser suit with a shirt unbuttoned to 'just' show a little cleavage to me is far sexier than mini skirts and not a lot on top!
But that's just me.
As for indoors and underwear, I prefer nice underwear to dressy ups.  
      I like to dress in what I feel comfortable in, and according to my other half, and others, if I am comfortable, I am confident, and that is a big turn on!
But I do have some sexy undies which come out for special occasions.. black and red lacy set...  black and red lacy would suit you .. if you like those colours!  You would look good in anything xxx  
      The corsetty stuff is all available in white in the summer ranges; you could go white and shiny (but not sticky)in satin for the summer.  The equivalent of the white tuxedo season!  
      For me it all depends on the person. If they wear something that is appropriate to who they are physically then that for me is sexy. It doesn't matter if it's jeans and a blouse, or a plain black dress. So long as it sets off the wearer's best points then that will get me every time.
It doesn't need to be overtly sexy, it doesn't need to be overly smart, it just needs to suit the person in it.
I can't stand someone trying too hard and trying to give off an image that is so not them.  
      Semi unrestrained eh? I like the sound of that. Almost sounds like I have a clue what I'm doing. :smug:  
      NWC why don't you order some stuff online, try it on and take pictures.  Post the pictures here and we will tell you how sexy you look and what items to keep :thumbup: