She realized that most of her friendships were shallow.
superficial charm
Frequency:
50
%
He tried to win her over with his superficial charm.
phony compliments
Frequency:
45
%
She saw through his phony compliments.
Idiomatic Expressions for be all fur coat and no knickers
Phrase: be all fur coat and no knickers
Meaning: to appear impressive or attractive on the surface but lacking substance or integrity underneath
Usage: She may seem successful and glamorous, but she's all fur coat and no knickers when it comes to managing her finances.