Is “whoopsidaisies” a Notting Hill reference?

I watched Notting Hill on the plane for the first time and there is a scene where the male love interest says Whoopsidaisies and the female love interest teases him about it. If you haven’t seen Notting Hill, it’s basically about a normal guy who accidentally meets a world famous actress and they fall in love which is kind of similar to Lana’s and Jeremy’s situation. So I was thinking, maybe she could be referencing this movie with the “Whoopsidaisies” line