[article id="1655559"]Gwyneth Paltrow's "Glee" guest spot[/article] was so memorable that the Oscar-winning "Country Strong" star will be heading back to the show for a second go-around. This time, she and "Glee" faculty heartthrob Matthew Morrison will be heating things up with a romantic story line.

Aside from the dating arc with Mr. Schuester, details about how Paltrow will once again shake things up as sassy substitute Holly Holliday remain scant -- even "Glee" star Lea Michele is in the dark about her possible scenes with the superstar actress.

When MTV News caught up with the singer/actress on the [article id="1656066"]Golden Globes red carpet[/article] on Sunday (January 16), she admitted that she didn't know much about Paltrow's return but maintained, "I'm excited. Anything with Gwyneth is great."

In addition to Paltrow, superstar Justin Bieber is set to be incorporated into the hit show soon, as the show is slated to take on some of the pop star's peppy catalog. But when it comes to the Biebs, Michele divulged that she won't be belting any of the teen idol's tunes, and said everything will be left up to the "Glee" guys.

"I'm not [singing Justin Bieber], but the boys are," Michele dished.

While Michele was short on [article id="1655561"]"Glee" details, show co-creator Ryan Murphy[/article] recently revealed how Bieber would fit into in the hit series, batting away rumors that an all-Bieber episode was in the works.

"Those [tributes] are reserved for artists with big catalogs," Murphy explained of why they won't dedicate an entire episode to the teen sensation's smashes. "Bieber comes up in episode 13 as a small plot point. Sam [Chord Overstreet] sings a JB song to win Quinn's [Dianna Agron] approval.

Are you excited to catch Justin Bieber's music and Gwyneth Paltrow's return on "Glee"? Let us know in the comments!

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