Possible Clues:

• Product whose ads featured twins
• ''Breathe Again'' singer Braxton
• Basil or Braxton
• Collette of ''In Her Shoes''
• Brand of home perm kits
• Tennille of The Captain and Tennille
• Creator of Sula and Sethe
• Collette of filmdom
• Braxton of song
• "Which twin has the ---?"