If my mum donated her body, sure.

Alternately, if my mum was an animal, and you had raised that animal from birth, gave it plenty of food, made sure it was kept safe from predators, parasites etc., I'd say it would think that you taking its skin and meat when it no longer needed them was a small price to pay. If aliens abducted me and made me that deal, and those things weren't already provided by the society I was surrounded by, I'd probably take it.

Human skin is really only good for parchment and whatnot. It's too thin to be used for protection and it's lacking hair for warmth. Maybe you could turn her into some kind of drum? I'm not sure how much tension human leather can take.

Anyway, again we were talking about things that are or are not normal. Human artifacts have been created throughout history, but they're generally pretty rare. They're noteable. Shrunken heads, bone churches, skin books, a skin lamp shade. I think someone made some gloves once?

So, wearing my mum would not be normal. I'm gonna say you can't because all of your friends would disown you.

No joke when this lab grown meat stuff finally hits its stride I'm going to start making calls to find out how much it would cost to grow me meet in a lab so I can eat myself.