Freddie Mercury Worn Bettie Boop shirt!?

Never seen this until today! Looks legit but to hard to tell.. What do you think

http://www.bonhams.com/auctions/21948/lot/260/

The guy who spent £5000 on it sure thought it was legit.

Funny anecdote about how the seller's mum sewed it back up after having thorn it by removing the tape.

My question is, how's anyone gonna prove its legit?

Now this looks far more interesting:

http://www.bonhams.com/auctions/15844/lot/366/

Contains ".....a short extract of an unidentified track: the other side contains an unidentified jazz-funk style instrumental track"

We need to know who bought this!!