It's OK, I'm Wearing Really Big Knickers is a 2000 best-selling[1] young adult novel by English author Louise Rennison, the second in the Confessions of Georgia Nicolson series.

In the previous novel, Georgia has finally landed the "Sex God", her longtime crush Robbie Jennings, for a boyfriend.

When they return, "Gee's" mum has seen a new doctor and rather likes him; she begins finding any excuse she can to make an appointment with him.

Georgia feels extremely awful about it, until she learns that Dave has started dating her friend Ellen (one of her best mates out of her "Ace Gang").

In the end Robbie admits he can't stop thinking about Georgia and really misses her and her weird ways.