I don't give them a choice.
Or time to argue.
Leave it for a while as she is het up now, then say, 'Right, amelia (or w/e), come with me quickly we need to get ready' take ehr to her wardrobe ask her what she is going to wear, pick up two outfits, ask which one.
When she chooses start putting it on, with emphasis on the 'quickly, quickly! If we don't hurry we won't be ready in time' and put it on her before she has a chance to realise what is happening.
It take about 1 seconds to pull a t-shirt over their head, same with a skirt, then her shoes, then straight out the door.
By the time you get outside she'll have only just realised what is happening.
OR
Let her be naked.
"Ok, I'm going now"
Go to the door, "are you ready?"
See how she reacts, does she refuse to go out without clothes? Are you happy with taking her out without clothes?
If you're going swimming can you not put her swimming clothes on? and take other clothes to put on after swimming, explaining her swimming stuff is now wet?