Related Clues:

• Guffaw
• Beam
• 'That's a ___!'
• Model's asset
• 'Get ready for the camera!'
• Prepare to be shot
• Winner's look
• Giggle
• Photog's request
• Show one's pearly whites
• 'Look happy!'
• It's heard just before a click
• Lips service?
• Cheese accompaniment?
• Photographer's request