To someone who keeps making passive aggressive comments about your figure?
I have a friend who means well but I think she is jealous as I've recently lost a lot of weight (2 stone). Every time I see her she makes comments about how good I look but they've always got a sting in the tail, for example "Oh you look so much more toned now, much less flabby than you were before", usually in front of as many people as possible.
I have started replying "Ooooh thank you, I'm so glad you think I look good, I'm so pleased about the weight loss".
Lighthearted, but what sort of responses would you give?