After watching the later episodes with Bailey (Blair's half sister, 20 years younger), the timeline is a bit wonky. I guess pregnancy in TV is not 9 months :lol: Or maybe I am jealous after two babies that go through the tv-sped up process. Here is what I uncovered so far. Spoilers ahead.

Season 7
139 - A New Life- 9/10/1985 [10/26/1985]
Based on due date Monica was 5 months along as she conceived in May based on her Feb. due date. Would the other "option" she was considering even be legal at that time?

146 - Christmas Baby- 12/10/1985 [12/14/1985]
Bailey born 12-25-85, was 6 weeks early so Monica's due date was around February 6th, 1986

151 - Concentration- 1/14/1986 [2/08/1986]
Bailey was about 6 weeks and that baby looks between 4-6 months, maybe older.
*Blair also says Monica has had a rough couple of months...but the baby is not even two months yet. Plus that baby would need more bottles :lol:

Season 8
????? Does she appear?

Season 9
194 - Adventures in Baileysitting- 9/22/1987 [12/05/1987]
This a 3-4 year old where Bailey isn't even 2 yet.

Great research, FOLfan!

Babies were rarely done well during the classic TV era. How many birth scenes have we all witnessed, where the "newborn" comes out looking like it's already four months old, is completely clean, and is looking around at stuff? How many times have we seen a baby suddenly two years old in a matter of months?

How about Tootie's aging process? She was 12 years old from Spring 1979 to Fall 1981.

How about Tootie's aging process? She was 12 years old from Spring 1979 to Fall 1981.

LOL...Yes and Kim was really 9/10 in 1979. Lisa was 16 in real life and graduated early in real life at 17 in 1980. Nancy McKeon was 14 in real life in 1980, but was supposed to be the same age as Blair both graduating HS in 1983. Mindy Cohn was the same age as Nancy McKeon, but played like a year older than Tootie and about 2 years younger than Blair & Jo.......It get's confusing :crazy:

LOL...Yes and Kim was really 9/10 in 1979. Lisa was 16 in real life and graduated early in real life at 17 in 1980. Nancy McKeon was 14 in real life in 1980, but was supposed to be the same age as Blair both graduating HS in 1983. Mindy Cohn was the same age as Nancy McKeon, but played like a year older than Tootie and about 2 years younger than Blair & Jo.......It get's confusing :crazy:

Kim was 9 when the Girls School episode on Different Strokes and was 10 during the entire first season while playing 12.

Mindy and Natalie's age pretty much matched. Natalie is listed as being 4 months younger than Mindy according to Natalie's birthday in "Adoption". Julie Anne Haddock's age matched Cindy.