Pushing different buttons allow different hairstyles for Lei Fang when selecting her (Most of her costumes that is):
Y button: Braided Hair
X button: Loose Hair
A button: Braided hair
White button: Braided Hair
Start Button: Braided Hair

• Costume changes for Lei Fang’s Costume 4:
  Y button: Braided Hair
  X button: Loose Hair
  A button: Short Ponytail
  White button: Short Ponytail
  Start Button: Short Ponytail
• Costume changes for Lei Fang’s Costumes 6, 8, 13:
  Y button: Short Ponytail
  X button: Loose Hair
  A button: Hair in Bun (?)
  White button: Braided Hair
  Start Button: Hair in Bun (?)
• Costume changes for Lei Fang’s Costume 15:
  X button: White Panties; Loose Hair
  Any Other button: Black Panties.
  
• Costume changes for Lei Fang’s Costume 20:
  X button: White Panties with Upside-Down Heart; Loose Hair
  Any Other Button: Hard to See Yellow Diamond Panties; Braided Ponytail