That 's the media 's story anyway . And unlike two of those three women she did n't shave her head for an acting role , and unlike Sinead it was n't to prove to herself that she was n't succeeding on her looks alone . i do n't claim to know what was going on in Britney 's head but if anything it seemed like cutting her hair off to spite her image . but i digress .

Question: Why did Sinead want to prove that she was n't succeeding on her looks alone ?
Answer: Because that 's the media 's story .Because she did n't shave her head for an acting role .Because she cut her hair off to spite her image .Because she wants to succeed on her talent .