Will drinking 12 pure fruit smoothies a day make me gain any weight?

They are around 90 calories per one. They have nothing but fruit in them (No added sugar, No preservatives) and have no bits. The brand is innocent and they're the kids ones. Thanks a lot! :)
Update: I ate about 400 calories today + The smoothies is around 1,080 That makes 1,480.
Update 2: I go for a 1 hour walk a day and I do 100 sit-ups a day.
8 answers 8