Popsugar Entertainment This Is Us This Is Us Season 3 Guest Stars This Is Us's Third Season Has Been PACKED With Guest Stars — Let's Count 'Em 23 October 2018 by Sabienna Bowman View On One Page Photo 13 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 13 Iantha Richardson Once again, Iantha Richardson returned as adult Tess in the season premiere flashforward. Previous Next Start Slideshow This Is UsTV