Correction: I assume the question is referring to activities outside of his work. Altho it is true he loves what he does for a living (singing), outside of work he likes spending his time surrounded by friends at home. Now that he has a boyfriend he does not go out as much but loves having friends over. He does not have any hobbies.
Update: 4/2013 Now that Adam no longer has a boyfriend he still enjoys having his friends over for the evening, but is also going out to local clubs more when at home and on the road. But when not working spending time with his friends remains most important to him whether at home or out and about with them.
Halloween
True Blood
Shopping and eating according to himself.
A dog. Correction: Adam has said in interviews that his favorite is a wolf, not a dog. Altho he likes dogs.
I'm guessing "Whataya Want From Me"
He doesn't have one. He's not into sports.
French silk. he also like mint chip
Adams mom is Leila Lambert. Shes a pretty woman :)
Forgotten Saints and Skingraft is where he buys a lot of his clothes.
Male.
Adam always says that naming favorites has always been impossible for him. This is true for his favorite song. He has many.
Adam Lambert doesn't have a sister.