Life Line, Twilight Sparkle something or other

There are three Twis here. Or rather, there's the suggestion of three Twis in here?

Tiny Twi. Grown-up Twi. Alicorn Twi...

Bit odd even for a doodle, not one of them has legs or a face! Or maybe they will, once I figure out how the hay to color something like this... ~.~;