We can’t help but wonder if there’s trouble brewing between Nick Lachey and Vanessa Minnillo since they’ve been out partying separately recently.

Last night Lachey attended Z100’s Jingle Ball in New York City and posed with Minnillo look-a-alike Ashley Tisdale. Meanwhile, Minnillo had a night out on the town without her beau in Los Angeles the night before.

This wouldn’t be too strange for most couples, but these two are attached at the hip!

Hmmmmmmmmmmmmmmmmmmmmmm!

Ashley Tisdale divulged to Extra that there’s a certain fellow she’s hoping will appear with her High School Musical 3: Senior Year.

“I would love for Johnny Depp to be in it. He did say in an interview that his kids love High School Musical and he wouldn’t mind doing a cameo. We should really jump on that one,” Tisdale exclaimed.

Depp has been hard at work in our Windy City filming the new John Dillinger movie Public Enemies, but if he can find time we’d love to see more of him on the big screen!

The High School Musical cast begins filming this month and Tisdale told Extra, “I heard it’s like eights weeks of rehearsal this time so it’s a lot. And the musical numbers are much bigger…We’ll probably be dancing six hours a day.”

After Ashley is done filming she plans to release another album, and what better critic than American Idol’s Simon Cowell?

“I’ve always wanted to know what Simon Cowell would think of me and stuff, so when he said he wanted to have lunch with me at his house I was like, ‘Oh my gosh yeah!’…He’s really nice.”

Taye Diggs, Adam Rodriguez and Ashley Tisdale attended a taping of Randy Jackson Presents America’s Best Dance Crew yesterday in Culver City, California. What an odd threesome.

And the dancers on the show look even wackier!

Miley Cyrus made her red carpet movie debut last night in Hollywood at the premiere of her 3D concert flick Best of Both Worlds.

Other celebs who walked the red carpet were the Jonas Brothers, Ashley Tisdale and Heather Locklear.

Ashley Tisdale and Vanessa Hudgens hit up a Los Angeles McDonald’s over the weekend and had a hard time getting their order through. The paparazzi made the girls giggle by trying to order things such as guacamole for them, which McDonald’s clearly doesn’t carry!

“High School Musical” star Ashley Tisdale has been showcasing her new nose recently. Personally I don’t think she needed one. What do you think?

Last night was the 75th Rockefeller Center Christmas Tree Lighting Ceremony in New York. Here’s some video of Nick Lachey introducing a performance by Ashley Tisdale.

Lachey and Tisdale were co-hosts for the evening. Other celebs who showed up for the holiday fun were Brooke Shields, Joey Fatone, Sean Kingston, and Natasha Bedingfield.

Zac Efron got some lovin’ from Minnie Mouse yesterday at the premiere of “High School Musical 2″ at the Downtown Disney District at Disneyland Resort in California.

Ashley Tisdale looked smokin’ hanging out with Mickey in her cute white dress.

Minnie Mouse cheated on Zac with Billy Ray Cyrus while his daughter Miley Cyrus made a cute face for the cameras.

Ashley Tisdale of “High School Musical” visited Fuse’s “The Sauce” yesterday in New York City.