Possible Clues:

• One put away for the summer
• Sauna user, e.g.
• A garment to make one perspire?
• Someone in a restaurant in Cornwall or Jersey
• Top athlete running in the heat, perhaps?
• Producer of some beads
• Promise to take in the sides of the garment
• Warm garment
• Top Cornish diner
• Southern climate -- husband's removed jumper