I do believe my sister is simply indicating that what Rockout is wearing could hardly count as clothes.
In which case, hope there isn't a blizzard. Not everyone's smart enough to pack generators in case of a power outage.
Rockout, you wear what you want to, weather be damned! Now, go outside and play while we stay inside with our cocoa and watch you slowly freeze.
There should be bottles of Code Red Mountain Dew nearby that you can use to start a fire if you have to.