### Clue: What Piaf had indoors at intervals — waders (2,7)
### Answer: NO REGRETS 
 ### Explanation: Definition: What Piaf had
A charade of NOR, ('i**N**d**O**o**R**s at intervals') plus EGRETS ('waders'), with reference to one of Édith Piaf's best known songs "Non, je ne regrette rien".