Crowd right into skimpy beachwear (6)
I believe the answer is:
throng
'crowd' is the definition.
(I know that throng is a more specific form of the action crowd)
'right into skimpy beachwear' is the wordplay.
'right' becomes 'r' (abbreviation).
'into' means one lot of letters goes inside another.
'skimpy beachwear' becomes 'thong' (I've seen this in another clue).
'r' put into 'thong' is 'THRONG'.
(Other definitions for throng that I've seen before include "Densely packed crowd" , "Troop" , "Mob" , "A crowded mass of people" , "Large numbers" .)