What does the cryptic crossword clue "Big, stocky don replaced one-piece garment (4,8)" mean?

The wordplay uses an anagram. anagram of BIG, + STOCKY + DON = BODYSTOCKING The answer is BODYSTOCKING.

Big, stocky don replaced one-piece garment (4,8)

Daily Mail Cryptic #17601 | 10 Down | 2025-04-21 flower