You can get medusa,Minotaur and kratos as a dlc. So you will have the items
there is no official Mario costume, but check some online levels, I bet you can make one there.
The Sephiroth costume came out on July 13, 2011 for LittleBigPlanet 2.
this can be in little big planet and made in 2
It is a costume for Littlebigplanet 2 that you buy from the Playstation store for $1.99 or 5.99 as part of the LBP2 Final Fantasy VII Costume Pack.
It will not be out. The Final Fantasy Costume Pack and the Individual costumes are only for LittleBigPlanet 2
You cannot.
Thanksgiving
You have to ace the three Savannah levels to get the full costume
It is only out for LittleBigPlanet 2 both as a separate costume for $1.99 and part of the Final Fantasy costume pack for $5.99 at the Playstation Store
in LBP2, you can search for it, then go to Creative. Click on it, go to the costume part, and then save the costume. You can also make it yourself.
If there is a contest on, it will probably give you an option to submit your costume
buy it from the PS Store