Every year, Childhelp, an Arizona-based charity founded to aid abused children, holds its principal fundraiser in conjunction with the Barrett Jackson automobile auction in Scottsdale. The event attracts a number of local celebrities and politicians and usually features a musical performance of some kind. The featured artist this year was Willie Nelson:

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Other celebrities in attendance included NFL quarterback Kurt Warner:

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Actors Cheryl Ladd and Jane Seymour:

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Arizona Governor Jan Brewer:

And controversial Maricopa County Sheriff Joe Arpaio (note the tie pin):