What does the cryptic crossword clue "Rare shot taken in pyjamas, sexy (5)" mean?

The definition is "Rare shot". The wordplay uses a hidden word. Hidden in "rare shot taken in pyjaMAS, SExy" The answer is Masse.

Rare shot taken in pyjamas, sexy (5)

Telegraph Prize Cryptic #3124 | 22 Down | 2021-09-05 flower