I'm a pianist and am accompanying an instrumentalist in a charity recital at the end of May in a large stately home. She wants to wear a full length dress so I need to too. Needless to say I have nothing suitable, although I will post my one possible full length dress when I can.

I'm not excited about this because this is an unexpected (and possibly quite large) expense and I need to be practising, not shopping! If it is going to be useful professionally on the future it needs to be reasonably simple and probably black.

It needs to look good seated and seen from the side. It has to work with a bolero or shrug so I can cover my arms if necessary and I suspect I'll feel safer it is has straps! I've had a browse around in the shops and online today.

So, any thoughts from anyone? What do you think of these?

http://www.johnlewis.com/227586/Style.aspx

http://www.johnlewis.com/183162/Style.aspx

http://www.johnlewis.com/183168/Style.aspx

http://www.johnlewis.com/203682/Style.aspx

http://www.debenhams.com/webap.....ck++dress+

ETA I don't really want to spend more than £100, even though I know I've linked to much more expensive ones. Sigh.