Related Clues:

• Show one's teeth, in a good way
• Photographer's word before taking a picture
• An upside-down frown
• Opposite of frown
• Please a photographer
• "Say cheese!"
• Word to a poser
• 'Listen to me ...'
• Fishing line for some snappers?
• Request before a shot
• Parenthesis, in many emoticons
• Facial expression of pleasure
• Expression shared by the answers to starred clues
• Flash one's pearly whites
• Optimist's urging