I interpreted the meaning of whatever in the line as the following definition
Whatever happened to your coiffure?!
You use whatever to ask in an emphatic way about something which you are very surprised about. (from Collins Cobuild Dictionary)
PonyFan Am I correct about it? The dictionary is correct. PonyFan So is the usage of whatever used this way in daily conversations?
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PonyFanAm I correct about it?The dictionary is correct.
PonyFanSo isI don't know about daily, but it's not uncommon.the usage ofwhatever used this way in daily conversations?