Nosy In-laws

Right from what food I eat to what shoes I wear.. which friends I meet, what shopping I have done... Everything they want to know and comment on.. it is getting too much for me now! Everything I do is questioned as if every choice I make is wrong! If I don't eat in morning it is wrong, if I don't eat sweet I should eat.. even after putting 5 kgs after marriage it seems they are not happy enough with my eating habits! Worse is MIL & SIL are always on diet and never eat themselves but my diet is scrutinised so much I feel like finding a corner to go eat alone rather than sitting on table with them staring into my plate and commenting..
Then my personal belongings.. how much I spend.. I am working and use my own salary, but SIL always has to compare my things prices to hers.. she even goes online to check what price I have brought something for
If DH and I go out, FIL and SIL remove information from DH to know where we went, who we met.. they want to know everything! I am not used to this behaviour as I have lived independently for many years.. I don't mind telling in laws about things but it seems they are keeping check of us and removing info from DH makes me sick. It feels like they are all trying to dominate me when I am least bothered about what they do.