Katy Perry Sports a Ring on Her Left Hand

Katy Perry Sports a Ring on Her Left Hand

Are they or aren't they?

That's the question John Mayer and Katy Perry fans are asking now that the "Roar" singer has been spotted wearing what appears to be a diamond ring on her left hand.

A rep for the couple could not be reached for comment, and Perry hasn't tweeted since she wore the ring out on Valentine's Day. However, Mayer recently tweeted what could be construed as a compliment about Perry.

John Mayer and Katy Perry's Ups and Downs

"I got the hottest girl in the game pick in' my brain," he tweeted on Feb. 15.

Either way, the couple seems happier than ever.

In December, they did their first on-air interview together to discuss their new song "Who You Love," and then spent Christmas as a couple.

John Mayer and Katy Perry Release Their 'Love' Portrait

"Katy is a superstar for a reason," Mayer said at the time. "That's the thing about working with somebody you love. You get to see them. I had to [make] a video in order to get to see my girlfriend."

However, the ring could of course just be a Valentine's Day gift.

How Katy Perry Surprised Fans at John Mayer Concert

Katy Perry and John Mayer seem like the perfect couple, and it definitely showed when the "Roar" songstress made a surprise appearance at Mayer's concert at the Barclay Center in Brooklyn, New York, Tuesday night.

Joining her boyfriend on stage for a duet of "Love Who You Love," it was obvious that the couple really has an insane amount of chemistry.

"Someone I know we all love – me a little more than you – please welcome the fantastic Ms. Katy Perry," Mayer told the crowd before his girlfriend walked out.

Upon hitting the stage, Katy was greeted with a ton of applause. The lovebirds also shared a sweet kiss before belting out their new hit song.

After an end embrace, Perry went backstage and reappeared with her handsome man and his band for their final bow.

The Hollywood power couple has been making the rounds to promote their duet, making an appearance together on "Good Morning America" Tuesday and debuting their sensual music video for the single later that same day.

Check out this video to see how true their song really is, and tune in to "omg! Insider" on TV tonight for more of the latest in entertainment news!

Katy Perry, Taylor Swift to Perform at Grammy Nominations Concert

Katy Perry and Taylor Swift have been added to this year's Grammy Nominations Concert Live!! – Countdown to Music's Biggest Night, set to take place this Friday, December 6th, at 10 p.m. EST on CBS – though both will literally be phoning in their performances. Perry, who just released her fourth album Prism, will take the stage from Canada, while Swift's set will come all the way from Australia where she is currently on tour behind her 2012 effort Red.

Lorde, one of pop music's breakout stars this year, has also been added to the lineup, as have members of Earth, Wind and Fire and T.I., who will take the stage with previously announced performer Robin Thicke. R&B singer Miguel is also now set to perform alongside country superstar Keith Urban. Drake and Macklemore and Ryan Lewis are also among the previously named acts, and more presenters and performers could be announced shortly.

The show will be helmed by two-time Grammy emcee, LL Cool J – who has hosted the nominations special since it began in 2008 – while Arsenio Hall, Enrique Iglesias and Ed Sheeran are all set to appear as presenters.

The 56th Annual Grammy Awards take place in Los Angeles and will air live on CBS on January 26th, 2014, starting at 8 p.m. EST. Ahead of the big night, the Grammys will honor Carole King, who will receive the MusiCares 2014 Person of the Year award during a charity fundraiser on January 24th; the ceremony will feature performances from Lady Gaga, the Dixie Chicks, Steven Tyler, James Taylor, Bette Midler and Jason Mraz.

Inside UNICEF Snowflake Ball: How Katy Perry Stole the Show

It was certainly a #GivingTuesday at the UNICEF Snowflake Ball on Tuesday evening at Cipriani Wall Street in New York City, where stars turned out in droves to support the charity's "belief in zero" efforts to end the preventable deaths of children.
UNICEF Ambassadors Angie Harmon, Danny Glover, Téa Leoni, and former ambassador Katie Couric were all in attendance, as well as Katy Perry, Christina Ricci, Bryant Gumbel, Audrey Hepburn's son Luca Dotti, Jenna Bush Hager and Henry Hager, Mark Consuelos, Kyle MacLachlan, Tyson Chandler, and more.

Perry, who was named UNICEF's newest Goodwill Ambassador at the event, stunned in a burgundy, velvet Naeem Khan gown on the red carpet, but changed into a glittering gold Michael Kors number to perform her hit single "Unconditionally," which she said was inspired by a UNICEF trip she took to Madagascar.

"I believe young people have the power to change their own lives, with our help," the 29-year-old songstress said of her new role. "I am honored to join UNICEF as a Goodwill Ambassador, and committed to doing everything I can to help children and adolescents who come from such different backgrounds but want the same thing: a brighter future."

Review: Katy Perry's 'Prism' honors spirit and flesh

The last place you might expect to find Katy Perry is lying on the bathroom floor, apparently contemplating suicide.

Yet there she is, in By the Grace the God, a surprisingly stark, stately track on Prism (*** out of four, out Tuesday), Perry's follow-up to Teenage Dream, the 2010 sophomore effort that secured her status as the reigning queen of feel-good pop.

"Thought I wasn't enough/ Found I wasn't so tough," Perry sings. But then the tone shifts to something more inspirational. Perry picks herself up; "I looked in the mirror and decided to stay," she declares.

That pretty much sums up the message of Prism, which finds Perry stretching herself beyond the sugar-coated sparkle of Dream in search of higher forms of empowerment. There is a self-consciously spiritual vibe to some of the material; on the sitar-laced Legendary Lovers, she asks a new partner to "say my name like a scripture."