Q: Who is the hot girl in the Müller Yogurt commercials?

A: Kaija Matiss

Kaija is an actress that we have featured here previously, for her fun portrayal as a fledgling actress in this AT&T commercial. This is her IMDb page.

Müller is a German dairy company now breaking into the U.S. market.

Kaija also stars in these 2 other fun talking Umulat-filled Müller commercials:

(Source: youtube.com)