Can I post a comedy video one - the famed Catfight from
'Carry On Girls' (1973)
It meets all your criteria, even though it's played for laughs.
Alas, even though the short blonde actress Barbara Windsor is NOT adverse to showing her bare butt in other Carry On films, no real nudity here, although Barbara does pull the bikini top off Margaret Nolan, you only see her from the backside till someone puts a coat on her.