User blog comment:FairyRaven/Fairy Tail Chapter 456: Orders, Review and Commentary/@comment-7418318-20151010140837

Now that I think about it... the moment Lucy get's her hands on one of her keys, she can just switch into a Star Dress. So getting rid of the nakedness quickly isn't really much of a problem for her... provided she has her keys in reach.

And right now those keys are just an arm's reach away from her.