Heidi Montag's Post Surgery Changes

If you watched “The Hills” last night, you may agree that Heidi Montag is not the same physically or emotionally.

Friends of the reality TV star have noticed that she’s acting strange and unlike the “bubbly” Heidi she used to be before the 10 surgeries in one day.

“Heidi used to be so funny and sweet, but now she’s quiet and hollow,” a pal reveals. “She isn’t all there when you speak to her.”

Sources told Usmagazine that on the set of “The Hills” people fear that Heidi is developing a dangerous addiction to painkiller- months after her recovery from plastic surgery.