From a BrE perspective, yes. Here "get changed" is the more usual idiomatic expression in most common situations. Of course, "change clothes" is perfectly intelligible too.
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seagullDo you have the impression that Americans don't use the expression "get used" very often?I guess you mean "get changed" rather than "get used"?
seagullAs you pointed out, I meant to say "get dressed."Um, your original question was about "get changed" ...