Yes, Tierra is in her underwear. When building components for computers or assembling pieces, she wears as little clothing as possible to reduce the risk of static shock, which could fry the components and shoot all her hard work to hell.

The laptop she's holding is her Twister's, as she constantly wants to upgrade it for him, but he says he's perfectly content with what he has. Personally, it's a pretty beefy system as Tierra built it herself and always wants to improve it for her special echidna, but he's satisfied with it and won't let her take it apart.

Anyways, just wanted to make something cute for Tierra, as she hasn't been getting much attention in my writing/drawings.

Techno brushes - http://z-design.deviantart.com/gallery/#/d1pre4n