Celebrity contestants Mel B, Mayim Bialik, Andy Dick and Jennie Garth compete for the chance to have their cupcakes featured at a party celebrating Atari.

Celebrity contestants Mel B, Mayim Bialik, Andy Dick and Jennie Garth compete for the chance to have their cupcakes featured at a party celebrating Atari.

Celebrity competitors Greer Grammer, Maria Menounos, AJ Michalka and Tamera Mowry-Housley make cupcakes honoring the completion of astronaut Scott Kelly's historic one-year mission in orbit.

Celebrity competitors Greer Grammer, Maria Menounos, AJ Michalka and Tamera Mowry-Housley make cupcakes honoring the completion of astronaut Scott Kelly's historic one-year mission in orbit.

Four returning bakers compete to have their cupcakes at the center of an epic party, celebrating the 40th anniversary of Cirque du Soleil.

Four returning bakers compete to have their cupcakes at the center of an epic party, celebrating the 40th anniversary of Cirque du Soleil.

Two adult bakers compete against two child cupcake prodigies, for the chance to have their creations featured at a party celebrating the DC SuperHero Girls.

Two adult bakers compete against two child cupcake prodigies, for the chance to have their creations featured at a party celebrating the DC SuperHero Girls.

Celebrities compete when Perez Hilton, Audrina Patridge, Lea Thompson and Nick Young battle to have their cupcakes at the center of a party celebrating the nation's champion cheerleaders and their coaches.

Celebrities compete when Perez Hilton, Audrina Patridge, Lea Thompson and Nick Young battle to have their cupcakes at the center of a party celebrating the nation's champion cheerleaders and their coaches.

Celebrities make cupcakes for a party celebrating the all-girl rock band, Josie and the Pussycats.

Celebrities make cupcakes for a party celebrating the all-girl rock band, Josie and the Pussycats.

Medieval Times is celebrated by Yvette Nicole Brown, Brooke Burke, Carson Kressley and Vanessa Marano, when the celebrity bakers compete to have their cupcakes featured at a 30th anniversary blowout party for the company.

Medieval Times is celebrated by Yvette Nicole Brown, Brooke Burke, Carson Kressley and Vanessa Marano, when the celebrity bakers compete to have their cupcakes featured at a 30th anniversary blowout party for the company.

The celebrity competitors include Hannah Hart and Grace Helbig (Electra Woman and Dyna Girl (2016)); Coolio; Antonio Sabato Jr. and Molly Sims in a showdown to have their cakes featured at a blowout party celebrating the 50th anniversary of the game, Twister. Written by anonymous

The celebrity competitors include Hannah Hart and Grace Helbig (Electra Woman and Dyna Girl (2016)); Coolio; Antonio Sabato Jr. and Molly Sims in a showdown to have their cakes featured at a blowout party celebrating the 50th anniversary of the game, Twister. Written by anonymous

Drake Bell, Lori Greiner, Bob Harper and Heather Morris create cupcakes for a party celebrating Roald Dahl's classic story, "Matilda".