Clue: Stocked by seafront supermarkets, they're top styles (8)
Answer: HAIRCUTS
Explanation: Definition: top styles
*Edit thanks to PGreen – *[se]**afro**[nt] and [su]**perm**[arkets] both stock haircuts ~~maybe HUTS="seafront", around/stocking AI=A1="super", so RC="markets"?~~