On Design Mother's, Stephanie and Michelle's got a new room decorated by Vicky's mother but on the teaser of Birthday Blues, Michelle and twins were in the old room.
In 6X11 Vickys mother redesigns Stephanie and Michelle's room but in 6X14 the bedroom is the original design.
Kimmy says her parents were going to send her to watch WrestleMania 6. However, the year is 1993. WrestleMania 9 was in 1993 whereas WrestleMania 6 was in 1990.
In the first part of this episode, Nicky and Alex come into Michelle and Stephanie's room in the morning to wake her up for school. The girls' room was updated 3 episodes prior in "Designing Mothers" with a totally new theme and furniture. Yet, somehow in this episode Michelle is shown in the old room style with with the old furniture.
Kimmy comes into DJ's room and says that her parents were going to send her to Pittsburgh to see Wrestlemania 6 when Wrestlemania 6 was really hosted in Toronto, Ontario.