Rivera Sings Adele in Glee’s 300th Musical Number…

Here’s something to be gleeful about: Naya Rivera will take part in Glee‘s 300th musical performance.

Naya Rivera and Amber Riley Perform Adele Mashup

The 24-year-old half-Puerto Rican actress—who stole the show as “Anita” during this week’s West Side Story episode—and her co-star Amber Riley will sing an oh-so-awesome Adele mashup during next week’s episode.

Performing as part of the Trouble Tones, McKinley High’s new all-girl glee club, Santana and Mercedes will perform a mashup of the British soul singer’s hits “Rumor Has It” and “Someone Like You.”

It’s the third time FOX’s hit musical comedy series has featured Adele’s music.

During an event to mark the milestone last month, Columbia Records’ Rob Stringer said it was a “happy coincidence” that the label handles both Adele and the music for Glee, while Riley noted the performance stemmed from an email she received.

“Someone emailed me a video of Adele saying she wanted me to sing her song, so I emailed it to Ryan and Brad and I think that’s how we got ‘Rumor Has It’/’Someone Like You,’ ” recalled Riley.

Glee‘s 300th musical performance will appear during Tuesday’s episode of Glee at  8:00 pm ET on Fox.

Anthony’s Date with the AMAs…

He’s getting major radio airplay as a featured guest on Pitbull’s “Rain Over Me”… And, now Marc Anthony is preparing to make a splash
at this year’s American Music Awards.

The 43-year-old Puerto Rican salsa singer has been added to the star-studded line-up of performers at this year’s show, along with Chris Brown and LMFAOMarc Anthony Performing at the AMAs

Anthony joins previously announced acts Pitbull, Christina Aguilera, Justin Bieber, Mary J. Blige, Kelly Clarkson, Katy Perry and
Maroon 5.

Adele received the most nominations this year with four. Meanwhile, Bruno Mars and Pitbull ranked as the top Latino nominees with two nods each.

Online voting is underway at the AMA voting website.

ABC will broadcast the AMAs live from Los Angeles’ Nokia Theater on Sunday, November 20 at 8:00 pm ET.

Gomez Going Global!

She’s already conquered America… And Selena Gomez is now one step closer to becoming a genuine international star.

MTV has tapped the 19-year-old Mexican-American singer/actress as the “hostess with the mostest” at this year’s MTV Europe Awards, the cable network’s global celebration of the year’s best music.

“I’m so excited to be the host of the 2011 MTV EMAs–it’s a dream come true,” professes Gomez. “This is such a huge event that always recognizes the biggest stars in music from across the globe, so it’s a real honor to be MC at this year’s show.”

As the official mistress of ceremonies, Gomez will oversee all of the evening’s onstage exploits, performances, winners and important moments. She’ll also Tweet live during the show, as well as offer unique commentary on mtvema.com.

Among this year’s EMA Nominees, Lady Gaga leads the pack with six nods, with part-Latino Bruno Mars and Katy Perry close behind with four nominations. Adele, Justin Bieber and Thirty Seconds to Mars are each up for three awards.

Other EMA nominees include Latina superstar Jennifer Lopez, Foo Fighters, LMFAO, Jessie J, Beyonce and Coldplay

The 18th annual MTV Europe Awards will take place at Odyssey Arena in Belfast, Ireland on November 6.