American Idol’s Katharine McPhee (season 5 runner-up) also made a guest appearance on last night’s episode of Ugly Betty. Kat appears as herself and shows up for Mode Magazine’s runway show and signs her self-titled CD (out now) for Betty (America Ferrera) to give to her sister Hilda (Ana Ortiz). Check out the video of McPhee’s Ugly Betty cameo below!

Check out Project Runway’s Tim Gunn’s very brief guest appearance from tonight’s Ugly Betty episode “I’m Coming Out”! Gunn plays a fashion correspondent during NYC Fashion Week and when designer Karl Lagerfeld passes by, he waves and says “Karl Lagerfeld! We love you! (looks into the camera) Ponytail at 70? Brave.” Gunn is expected to make another cameo during next week’s episode.

Ugly Betty star America Ferrera was her usual cutie pie self last night on The Tonight Show with Jay Leno. Jay poked fun at America for having her hand on Steven Spielberg’s leg during the Golden Globes. But when America was telling the story of mixing up two celebrities, she accidentally cusses! Oops! Watch the video below!

Oh yeah, and she announced that Taye Diggs and Naomi Campbell have upcoming appearances on Ugly Betty. Lucy Liu and Jerry O’Connell (pictured below) are also making appearances.

Also pictured: Vanessa Williams and Rebecca Romijn (O’Connell’s real-life girlfriend). If you missed Vanessa on Jimmy Kimmel on Jan. 26, check it out here.

ABC just announced that Ugly Betty star Rebecca Romijn (Alexis Meade) just hooked up boyfriend Jerry O’Connell with a stint on the Golden Globe-winning comedy. Jerry will guest star in the “Derailed” episode where he’ll play Joel, a man Alexis Meade meets while slumming in a sports bar with Wilhelmina Slater (Vanessa Williams).

And to pull ahead during February sweeps, Lucy Liu (Charlie’s Angels, Kill Bill, Ally McBeal) will also appear in a two-episode arc playing Grace Chin, a.k.a. “The Chin,” a formerly frumpy college classmate whom Daniel Meade (Eric Mabius) once stood up on a date. When Daniel needs Grace’s help with a pressing family matter, he learns that she has a long memory. Her first episode, “Derailed,” will air on February 15 on the network.

Pictures below include stills from Ugly Betty episode “I’m Coming Out,” which airs tomorrow and guest stars American Idol’s Katharine McPhee. More pictures after the jump!

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Ugly Betty star America Ferrera is Estylo Magazine’s February/March 2007 covergirl! America is one hot mamacita! Gorgeous photoshoot! You can read the full interview after the jump; there are English and Spanish translations. Here are a few excerpts:

• Are you still studying at USC (University of Southern California)? Yes, I have one more semester until I can gradaute. It will take more than one semester to do but I’ll finish eventually. I study international relations.
• You maintain a high GPA? Yeah, I’m a presidential scholar. A 3.5.
• Do you have a wish list of people you want to work with? If I get to work with Tom Hanks, I’ll feel like my dreams have definitely come true. I adore Kate Winslet because she’s fantastic in so many different ways. I love the fact that she’s a woman and having babies and still a professional.

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The fabulous Becki Newton brought along Ugly Betty co-star Michael Urie as her date to the Golden Globes. You caught Becki as both the cruel but couture-blessed Amanda and braces-wearing Ruthie last week, right? Love her! Love her! Love her!

Not so sure about Vanessa Williams‘ hair… or the fur she’s wearing.

Also pictured: America Ferrera and Eric Mabius

UPDATE :: America Ferrera picked up “Best Performance by an Actress in a Television Series - Musical or Comedy” and the cast of Ugly Betty picked up “Best Television Series - Musical or Comedy.” Congratulations!