Famous Celebrity Guest Stars on Sister, Sister

1 Tahj Mowry Guest Starred on Sister, Sister

Yep, Tahj Mowry — aka Tia and Tamera's real-life younger brother — guest starred on the show as three different characters, including Cousin Tahj in the season two episode "Get a Job," Sammy in the season three episode "Christmas," and T.J. in the season five episode "Child's Play."

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2 Brittany Murphy Was a Recurring Character on Sister, Sister

Image Source: Getty / Ron Galella

Brittany Murphy played the recurring role of Sarah, Tia and Tamera's best friend, in the show's first season.

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3 Gabrielle Union Was a Recurring Character on Sister, Sister

Image Source: Getty / Ron Galella

Gabrielle Union played the recurring role of Vanessa, Tia and Tamera's friend, during the end of the show's fourth season and the beginning of the fifth season.

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4 Taraji P. Henson Was a Guest Star on Sister, Sister

Image Source: Getty / J. Vespa

We also spotted Taraji P. Henson playing Briana in a season five episode called "Two's Company."

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5 Kobe Bryant Guest Starred on Sister, Sister

Image Source: Getty / Frank Trapper

Kobe Bryant played himself in "Kid-Napped," during which his character filmed a commercial with the father of a popular girl at Tia and Tamera's school named Rhonda.

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6 Kenan Thompson and Kel Mitchell Guest Starred on Sister, Sister

Image Source: Nickelodeon

Kenan Thompson and Kel Mitchell guest starred on the episode "Inherit the Twin," where they played Tia and Tamera's lawyers in student court.

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7 Mary-Kate and Ashley Olsen Guest Starred on Sister, Sister

Image Source: Getty / Jim Smeal

Tia and Tamera went head-to-head with Mary-Kate and Ashley Olsen on a game show during the episode "Slime Party," and it went about as well as a slime party possibly could.

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8 Keiko Agena Guest Starred on Sister, Sister

Image Source: Getty / J. Vespa

Keiko Agena, aka Lane Kim from Gilmore Girls, guest starred in the episode "Kid in Play" as an unnamed student.

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9 Kyla Pratt Guest Starred on Sister, Sister

Image Source: Getty / Frank Trapper

Kyla Pratt — who you may recognize as Penny from The Proud Family — appeared in Tia's subconscious in the episode "The Road Less Traveled," during which Tia considers taking a summer internship with the WNBA.

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10 Phill Lewis Guest Starred on Sister, Sister

Image Source: Getty / Michael Bezjian

Phill Lewis, aka Mr. Moseby from The Suite Life of Zack and Cody, can be spotted as Tia and Tamera's teacher Ed Berry, as well as a campaign consultant named Clifton McNair on two later episodes of the show.

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11 Daphne Reid Guest Starred on Sister, Sister

Image Source: Getty / Ron Galella, Ltd.

Daphne Reid, who you might recognize as Aunt Viv from The Fresh Prince Of Bel-Air, also appeared on Sister, Sister in the season four episode "Double Exposure," during which she played Charmagne, Ray's potential love interest. Fun fact: in real life, Reid is married to Tim Reid, who plays Tamera's father Ray Campbell on the show.

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12 Montell Jordan Guest Starred on Sister, Sister

Image Source: Getty / Steve Granitz

During the season four episode "Model Tia," singer and songwriter Montell Jordan guest starred as himself while Tia and Tamera attempt to get their foot in the door of the modeling world.

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13 Donald Faison Guest Starred on Sister, Sister

Image Source: Getty / Ron Galella

Scrubs star Donald Faison made an appearance in the season six episode "Greek to Me" as a the head of a fraternity that Tamera's boyfriend was investigating.

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14 Barry Watson Guest Starred on Sister, Sister

Image Source: Getty / Ron Galella

7th Heaven star Barry Watson made an appearance in season three as "Barney the surfer dude" in a two-part holiday special called "Thanksgiving in Hawaii."

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15 Orlando Brown Guest Starred on Sister, Sister

Image Source: Getty / Theo Wargo

That's So Raven's Orlando Brown was only 9 years old when he played Clayton, Tamera's blind date in the season four episode "Little Man Date."

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16 Sherman Hemsley Guest Starred on Sister, Sister

Image Source: Getty / Ron Galella, Ltd.

Sherman Hemsley, known for his roles on The Jeffersons and The Fresh Prince of Bel-Air, played Tia and Tamera's grandpa Campbell in the season three episodes "Christmas" and "Shoeless."

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17 Lisa Leslie Guest Starred on Sister, Sister

Image Source: Getty / Magma Agency

Former professional basketball player Lisa Leslie also made an appearance on the show as herself in the season five episode "Ladies' Choice" and the season six episode "The Road Less Traveled."

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18 Christina Milian Guest Starred on Sister, Sister

Image Source: Getty / Kevin Winter

Actress and "Dip It Low" singer Christina Milian guest starred on the show as Lana in the season four episode "Kid-Napped," and Girl Number 3 in season four's "When a Man Loves Two Women."

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19 Rachael Harris Guest Starred on Sister, Sister

Image Source: Getty / Lawrence Lucier

Rachael Harris guest starred on Sister, Sister as Simone, a bossy college senior, in the season six episodes "Home Sweet Dorm," "Stop in the Name of Fun," "Home Court Advantage," "We Are Family," and "The Domino Effect."

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20 RuPaul Guest Starred on Sister, Sister

Image Source: Getty / Mitchell Gerber

RuPaul showed up in the season two episode "Put to the Test," during which the Drag Race host played a pretentious boutique owner named Marje.

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21 Larry Wilmore Guest Starred on Sister, Sister

Image Source: Getty / Steve Granitz

Comedian and former Daily Show correspondent Larry Wilmore guest starred as a bus driver in the season one episode "Out Alone." Wilmore was also a story editor and writer for the show from 1994 to 1996.

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