I never guessed you were wearing a hairpiece, in 2010 - 2011 I lost the front part of my hair due to epilepsy meds, so I bought 2 fake hair wigs a blonde one & a auburn one, people who saw me in the auburn one (my favourite) thought I'd had extensions & didn't guess I had a wig!
I expect your real hair may grow back curly, it seems to happen after chemo & medication related hair loss?
You look great anyway considering you've been so unwell, hope you continue to recover well x