As Christina Applegate turns 40 on Friday (no, we can’t believe it either!), our friends at Snakkle.com take a look back at her career highs and hair lows. Cancer survivor Applegate has wowed us from the days of Kelly Bundy to her role as a frazzled new mom on the freshman hit “Up All Night.” But we found some smaller roles she landed before she hit it big that may surprise you.Wednesday, November, 23, 2011, 1:23 AM

Applegate wasted no time getting into the business, making her small-screen debut with her actress/singer mother, Nancy Priddy in this 1972 commercial for Playtex. Little did mother or daughter know what a career this ad would launch. Playtex wasn't the only commercial she starred in, though.Seth Poppel/Yearbook Library - Wednesday, November, 23, 2011, 1:23 AM

Christina also starred in an '80s Mattel Barbie commercial. A natural in front of the camera, a young Applegate enthusiastically played with the Pose Me Pretty Barbie in a commercial for the doll. Take a look at that smile!Seth Poppel/Yearbook Library - Wednesday, November, 23, 2011, 1:23 AM

Applegate and her mother shared the screen again in the 1981 horror film "Jaws of Satan," which centered on a preacher battling the devil, who has taken the form of a huge snake.Seth Poppel/Yearbook Library - Wednesday, November, 23, 2011, 1:23 AM

After small roles in television movies and series, Applegate nabbed her first recurring TV role opposite Scott Baio on the popular ’80s sitcom “Charles in Charge.”Seth Poppel/Yearbook Library - Wednesday, November, 23, 2011, 1:23 AM

Although the drama "Heart of the City" lasted only one season, it was Applegate’s first starring role on a television series. She played the daughter of a cop who worked long hours on the night shift so he could spend time with his teenagers during the day.Seth Poppel/Yearbook Library - Wednesday, November, 23, 2011, 1:23 AM

                              See the rest of the gallery at SnakkleWednesday, November, 23, 2011, 1:23 AM