Demi Lovato made her debut on Glee on Thursday evening, and not only does she sing "Here Comes The Sun" by the Beatles with Naya Rivera's character, but the ladies share a kiss afterwards! We already knew that Demi's character Dani was going to be Santana Lopez's love interest, but we were very curious to see where the show went with this. And to be honest, it was way tamer than we thought!

In other news, Demi debuted her new blue hair on Instagram yesterday:



It's better than the blonde, but it's going to fade in the next few days so we hope she has a plan!

Sinead O'Connor just can't shut up! Yesterday, the "Nothing Compares 2 U" singer wrote an open letter to Miley Cyrus, urging her not to let the music industry "prostitute." Subsequently Miley blasted the Irish songstress on her Twitter comparing Sinead's twitter feed to Amanda Bynes', and now Sinead has fired back with not one but TWO open letters in which she threatens taking legal action against Miley even she doesn't apologize for the slam. All aboard the Sinead O'Connor to Crazytown!

"You can take five minutes today between g- string f***ing changes to publicly apologise and remove your abusive tweets. If you do not then you don't give a s**t who you mock and what damage you do by being so ignorant," ranted Sinead.

Hey Sinead O'Rebellion why don't you just do yourself a favor and stop talking?

After Sinead's original open letter, the "Wrecking Ball" singer posted tweeted, "Before Amanda Bynes… There was…" and then posted a screengrab of Sinead’s old Twitter account in which wrote a bevy of bizarre tweets including ones asking for psychiatric help.

Sinead retaliated when she posted a note on her Facebook entitled "ANOTHER OPEN LETTER TO MILEY CYRUS," in which Sinead warned Miley that challenging her is, "even more f*****’ stupid than behaving like a prostitute and calling it feminism."

Sinead also came at the "We Can't Stop" singer for knocking both her and Amanda’s public breakdowns, writing: "You have posted today tweets of mine which are two years old, which were posted by me when I was unwell and seeking help so as to make them look like they are recent. In doing so you mock myself and Amanda Bynes for having suffered with mental health issues and for having sought help."

Hmm while we agree mocking the mentally ill is not cool, but neither is attacking people in "open" letters for all to see. If Sinead really wanted to get through to Miley, she could have figured out a way to send her the original (seemingly well meaning) letter privately. But apparently that wouldn't garner enough attention.

Click thru to read Sinead's two new open letters ...

She's getting so big!

Kim Kardashian just returned from a whirlwind trip to Paris, and the reality star had one very cute reason to rush home!

Back stateside, the Keeping Up with the Kardashians star shared this sweet photo of infant daughter North West on her Instagram account with the caption, "I missed waking up with my little."

Kimye's little princess looks so much like her famous daddy! From the chubby cheeks to the nose, Nori is the rapper's mini-me!

We wonder when the couple will finally start bringing her out in public?

We love his music and he's a charming dude, but when he shaves and cuts his hair we simply can't get enough of John Mayer! We totally understand why Katy Perry was gushing about her beau in Billboard magazine the other day...

John stopped by Jimmy Kimmel Live on Thursday night, and he performed "Wildfire" and "Dear Marie," and the 35-year-old singer also chatted about his throat surgery, his tour and yup, he also opens up about Katy and their duet "Who You Love," which is featured on his new album, Paradise Valley.

"She was fantastic, it was a really great experience," said of working with his lady love in the studio. "I listened back to it and it's really convincing, and I watched it get made and I'm still kind of taken aback," he said. Click the video below to see more of his interview!





P.S. John in a suit? Looooves! Click thru for another video of his performance!

From Benji Madden to Liam Hemsworth to Brittny Gastineau, she certainly knows who to hang out with/make out with in Hollywood if she wants to be seen!

On Thursday evening Eiza Gonzalez went to Hooray Henry's with Kim Kardashian's BFF, and we aren't sure how long the ladies have been acquainted, but they seemed to have a great time together. But where's Liam? He's not exactly the club rat type, so we're wondering if they had a little romantic rendezvous later...

When the duo left the club in Eiza's silver Range Rover, photographers asked the Mexican singer/actress how Liam was treating her and if she was worried about running into Miley, but she stayed mum on the matter. She did smile and wave and politely ask photogs to move out of the way, so you gotta have some respect for that ... and we're obviously Team Miley, but you have admit, Eiza is pretty hot!

Melanie Griffith is lookin' fiiiine, y'all!

How'd this 56-year-old get such an amazing body? With her skinny spandex pants, and workout shoes, Mel must be spending some time in the gym ... and it definitely does a body good!

Fox

Lea Michele sings a touching rendition of Adele's "Make You Feel My Love" in upcoming the "Farewell to Finn" Glee episode -- a goodbye to the late Cory Monteith.

This new promo hints at dramatized version of the cast's -- and particularly Lea's -- final words for farewell to their co-star and friend :(

Katy Perry did not want her picture taken at LAX Thursday evening!

Depite news the "Roar" singer will get an hour-long special on the CW later this month to coincide with the release of her album Prism, on October 22, Perry wasn't in the mood to talk about or even to smile for photographers as she touched down in LA.

Katy will also perform at the new iHeartRadio Theater in Burbank as part of an album release party that will also open the new venue next door to CW headquarters.

In the meantime, KP just returned from fashion week in Paris but it looks like she left her haute couture in the French capital and opted for casual-comfy travel cashmere with Chanel espadrilles and a soft scarf. No matter what she's wearing, she still looks good!