British comedies
of the 60s and 70s often included completely gratuitous lingerie scenes, randomly dropped into the script for no apparent reason at all. Phenomenally popular in Commonwealth nations, they've since became a mainstay in the popular culture. It's no exaggeration to say that an entire generation of young men grew up checking the weekly news guide to
see when the latest episode of Dick Emery or The Two Ninnies was coming out.
As mentioned elsewhere, Sid James probably started it all off with the Carry On franchise, of which 1961's "Regardless" is still one of the best known examples.
As suggested by the image posted above, the humor was similar to The Benny Hill Show
and the girls just as beautiful. It's interesting to see how lingerie styles changed over the years. For example, in the early
1960s, the girls wore suspenders and stockings:
...while a few years later, they wore only bra and panties:
By the 1970s, fashions had changed completely:
Then suspender stockings made a brief comeback (for one film) in 1972...
In British comedies, young girls weren't
embarrassed to walk around in their lingerie, even if there were men
watching. They were completely innocent, and seemed to enjoy modeling
their underwear in public. It's unfortunate they don't make movies like
this any more.