Lady Gaga

Stefani Joanne Angelina Germanotta (born March 28, 1986), known by her stage name Lady Gaga, is an American singer-songwriter, record producer, dancer, activist, businesswoman, fashion designer, actress and philanthropist who along with Elton John contributed the song "Hello, Hello" in the 2011 Touchstone Pictures film Gnomeo & Juliet. She also appeared in the 2012 Disney animated short Electric Holiday. She has recently recorded a holiday special with the Muppets, which was aired in 2013, and made a cameo appearance in Muppets Most Wanted with Tony Bennett. She took Kermit the Frog as her date to the 2009 MTV Video Music Awards. In an interview with Perez Hilton, Miss Piggy dismissed the concept of them dating, saying that "No, no I don’t talk about lies. I talk about truth." She also made headlines wearing a top made entirely of plush Kermit the Frogs by Jean Charles de Castelbajac on German television. She wore the outfit as a statement against wearing fur as it "looked like a bunch of dead Muppets". Jason Segel had written a cameo for her in The Muppets, but she does not appear in the finished movie. She also made a cameo in the Phineas and Ferb episode, Great Balls of Water.

It seems that either she never filmed a scene, or her scene was filmed, but cut (like many other cameos). On March 28, 2011, Gaga's 25th birthday, Ellen DeGeneres called the artist from her daily talk show The Ellen Degeneres Show to wish her a happy birthday. During the call, Ellen presented a birthday cake to the singer, commemorating a number of famous outfits that the artist wore throughout her young career, including a Kermit the Frog face, facing the audience.

Trivia

 * Gaga is a huge fan of the Disney Princesses. Some of her fashion sense is inspired by the franchise.
 * In the 2012 book The Twelve Days of a Muppet Christmas (and a Chicken in a Pine Tree), one of the ringtones shown on Miss Piggy's phone is "Lady Moi-Moi," a reference to Lady Gaga.