Halloween costume ideas for 1st Halloween

I love Halloween and now that I'm a parent, I want to celebrate it with my daughter. I just don't know what costume I should dress her up as. So my question is what costume should I dress her up and where can I can buy it? Her father and I are both geeks (my costume last year was the T.A.R.D.I.S from Doctor Who, which lead to inside jokes when I found out I was pregnant three weeks later. Unfortunately, I cannot do anything Doctor Who this Halloween because we are going to a Doctor Who convention the week after Halloween).

I have to speak with my job about dressing up...but that too is not a bad idea...
    8Theresa Gould
    There are lots of cute baby costumes. There are Disney characters, Pooh Bear characters, lady bug, flowers, frogs, etc. Good luck and have fun!
    About Melissa Rodriguez-Barroso
    Current: Woodside, New York
    Birth: July 16
    On Moms.com since: Aug 10, 2014
    First time mom