It has to be said from reading the others comments that this film produces a completely different reaction on those who have weight issues & those who don't. The fact that the film is based on society's reactions and experiences for people (Rikki) with weight issues and those who don't! (Rob) - later, even Ricki herself said that she no longer wished to play such obvious roles.
As a larger person myself, the idea of emotional love and physical love with a slim person in combination can be a problem. Negative Body Image can be very distructve - Happily I experienced the 'hunk relationship' which was very healing - but for all the wrong reasons -I am guilty of proving to society that good looking people don't find fat people unattractive. In fact it took several (or more) such relationships to realise that relationships are much much deeper. Sorry to bore you, but I really did relate to the film.
I didn't want the film to be seen just as a 'Hollywood Dream' as on commenter wrote . . . "as if the fat girl would get the hunk".
But, yes the film was funny, it was sweet and very entertaining.