I'm not saying Karen does this, but... when I was at uni we had a classmate called Sam who had long blonde hair. She would wear it long and straight one day, long and curly the next, and we couldn't work it out. Eventually Mrs Thistle* asked her how she managed it and it turned out Sam had a blonde wig the same length as her hair. So when she wanted curls for the day she popped her wig on.
*this was before becoming Mrs Thistle.
*this was before becoming Mrs Thistle.
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