Possible Clues:

• Performer who might step on some toes?
• Pavlova perhaps bland mixed with treacle
• Fonteyn, say
• Performer giving recent ballad a new twist
• Goes toe-to-toe with everyone in venture capable of performing 23 down
• Potentially all decent -- bar this stage performer!
• Goes toe-to-toe in classical routine with Santa's helper
• Eg, cast member for Swan Lake
• Santa's helper goes to Indonesian island we hear to be on her toes
• Professional stage performer — a blander Celt (anag)