When Keiko is seen in her room window, she is wearing her yellow nightgown with the heart on the front. But after the scene showing Carter, Rosie, and Nick in the yard, when Keiko is breaking the fourth wall, she is suddenly wearing her azure tunic top which also has a heart in the front.
At the end of the episode, Keiko talks to the others while in her pajamas from her bedroom window. The scene shifts to Nick and he says his line, it then shifts back to Keiko seconds later, and she's now dressed in her regular clothes.