I think the cloak is standard PM also but not sure about that collar? May be from a theme I am less familiar with.
I believe it appeared with the victorians..
Yes, it's in the Victorian hat and jewelry stall.
I thought it was before those, with the first batch - yes: 5500 the lady+maid set (playmodb link (http://playmodb.org/cgi-bin/showinv.pl?setnum=5500))
I thought it was before those, with the first batch - yes: 5500 the lady+maid set (playmodb link (http://playmodb.org/cgi-bin/showinv.pl?setnum=5500))