According to Jenn's testimony, Jay had not committed the murder, so there was no need of him changing the clothes, making it strange and a reason of suspect that he changed.
<u>Explanation:</u>
The testimony given by Jenn was that Jay had told her that he did not commit the murder and rather Adnan had committed the murder and killed Hey. But it was only Jay who knew about this murder.
So it was very strange when Jenn took Jay to make him change his clothes because according to this testimony, changing clothes of Jay was not required at all.
