"Monaco is a very elegant grand prix and when we pull up to the grid and there's beautiful women on the grid, that's the Monaco Grand Prix and that's a lovely thing."
Last month, Monaco organisers spoke of their opposition to Liberty's ban.
Ferrari driver Sebastian Vettel agreed with Lewis.
"I like women. I think they look beautiful. The bottom line is that there is too much of a fuss nowadays," the German said.
"All the women that took part as a grid girl in the past did it because they want to. I'm sure if you ask any grid girl on Sunday if they're happy to stand there, their answer will be yes.
"I don't think there's anybody that forces them to do it."
The decision to drop grid girls proved controversial. Supporters of Liberty's stance agreed that the practice objectified women.