I quite like
Alexandra as a mn; as a fn, it and its short forms have been too well used for comfort.
I prefer
Victoria to
Alexandra because it's never been as popular. The
Vickie nns are fine by me, but I find
Tory unacceptable.
I would use
Vickie as a mn without hesitation: it is the full name of a very good friend.
Jean Alexandra;
Alice Victoria