Well, I am not the 'official' word, but....hmmm....I am not sure I can answer...so, I say, if she wants to be? I think "technically"...if it is even a technical call, tuxedos are so named because of the tuxedo like formal wear attire. I think Abby might be a bit shy of the traditional formal wear. But, maybe Abby is just dressed in next years' style? I believe in INCLUSION, not EXCLUSION, so I would tend to err on the side of "join our club"!!!!