How would I fade my model all at once?

https://www.youtube.com/watch?v=nWzZz5XoSQI&feature=youtu.be How would I make my TARDIS fade all at once without wait for each part to fade? Script:

t = game.Workspace.TARDIS:GetChildren()

for i = 1,#t do if t[i]:IsA("Part") then for p = 0, 1, 0.1 do t[i].Transparency = p wait(0.1) end end end