Possible Clues:

• Horsy type, in Ascot's perimeter, that brings good luck?
• Given a little tea, one that's obstinate and cross may be charming
• Charm a cross model
• Lucky to be so cross at the outside
• How charming to get about a hybrid!
• Charm worn against bad luck
• How charming to be so obstinate inside
• Necklace option
• Model put on a slipper, displaying charm
• How charming to be so at about a cross!