Of course she is (even if she under performs by her debut standards).
An A lister is a person that is given to major stars that are admired by the general public, including reality stars. Basically the lists are based on how well they are known.
B list is for people with a lessor known celebrity status
C list are for those where people know of them but not many people at all.
D list celebrities basically appear on talent show panels and crap TV like that.
So y'all in here to think an under performing era affected her place on the A list should probably hush hush
http://en.m.wikipedia.org/wiki/A-list