Marion Ross, Florence Henderson & More Join Nickelodeon's INSTANT MOM for Mother's Day, Beg. Tonight

This Mother's Day, Nickelodeon pays tribute to moms with the coming together of four classic TV mothers - Happy Days' Marion Ross, The Brady Bunch's Florence Henderson, Family Ties' Meredith Baxter, Sister, Sister's Jackée - and one classic TV daughter, The Cosby Show's Tempestt Bledsoe who will join star Tia Mowry-Hardrict in an unforgettable episode of Nick at Nite's Instant Mom, premiering tonight, May 8 at 8 p.m. (ET/PT).

In Instant Mom's "Not Your Mother's Day," Stephanie (Mowry-Hardrict) is excited for her first Mother's Day, but is disappointed when she learns the family intends to celebrate her on Stepmother's Day instead. Stephanie takes her own mother, Maggie (Sheryl Lee Ralph) for a last-minute spa trip to celebrate the holiday and gets some unexpected "mom" advice from a few experts who attempt to cheer her up. All four iconic TV moms chime in about their own experience being a mother, giving a hysterical nod reflecting their classic characters.

Recently picked up for a second season, Instant Mom follows Stephanie (Mowry-Hardrict), a party girl who marries Charlie (Michael Boatman, Spin City) and struggles to maintain some sense of her fun-loving, slightly irresponsible life while managing being a full-time stepmom. Sheryl Lee Ralph (Moesha) stars as Stephanie's overbearing mother Maggie, who is never shy about making known her point of view on parenting or pointing out its superiority to her daughter's approach.

Nick at Nite is Nickelodeon's nighttime programming block that features popular hit family comedies including the Emmy Award-winning series Friends, My Wife & Kids, George Lopez, The Nanny, Yes, Dear, See Dad Run and most recently, Instant Mom.

About Nickelodeon

Nickelodeon, now in its 35th year, is the number-one entertainment brand for kids. It has built a diverse, global business by putting kids first in everything it does. The company includes television programming and production in the United States and around the world, plus consumer products, online, recreation, books and feature films. Nickelodeon's U.S. television network is seen in almost 100 million households and has been the number-one-rated basic cable network for 19 consecutive years.