Ariana Grande Reunites 'Victorious' To Celebrate 23rd Birthday, Tells Meghan Trainor To Chill

Ariana Grande has told Meghan Trainor to chill and to not get mad over a person who made her waist appear smaller in size in her "Me Too" video, according to Cosmopolitan. The 23-year-old "Dangerous Woman" singer otherwise has come out in support of Trainor, though.

In May, Trainor uploaded a Snapchat video in which she criticized someone who edited her "Me Too" video to make her waist appear smaller in size without asking her permission. In that video, Trainor was pretty mad about it, saying that she had taken down the video.

"Hey guys, I took down the 'Me Too' video because they Photoshopped the cr*p out of me, and I'm so sick of it and I'm over it, so I took it down until they fix it."

But Trainor didn't listen to Ariana Grande's advice to "chill" and not upload that video on Snapchat. In the video, the "All About That Bass" singer admitted that her waist is not that "teeny," adding that she had "a bomb waist" that night.

Trainor also apologized and added that she hoped someone would fix it as soon as possible since she is planning to perform in front of her fans in Times Square. And even though all her fans supported Trainor, her good friend Ariana Grande didn't think losing her temper was a good idea.

Trainor revealed the news about Ariana Grande being the sensible one while speaking at the B96 Pepsi Summer Bash.

"I was Photoshopped and I freaked out and she [Ariana Grande] called me and was like, 'Take a breath, I know you're sad – I'm sorry! We got this – don't go online.'"

Trainor admitted that Ariana Grande was totally cool about it, saying that even though it was terrible, things like this happen sometimes. In fact, the 22-year-old "Me Too" singer said she wished she had taken her pal's advice, adding that she already regrets posting that video online.

"I should have calmed down and taken a few more deep breaths but I just went at it on Snapchat. I didn't want my fans to be like 'where is the video?'"

Ariana Grande, who turned 23-years-old less than two weeks ago, threw a little reunion bash for her former Victorious co-stars, according to the Daily Mail. The "Focus" singer was joined by Matt Bennett, Daniella Monet, Avan Jogia, and Leon Thomas III to celebrate the occasion.

For some reason, Victoria Justice didn't attend the reunion party for the show that aired in the period between 2010 and 2013.

In the photos taken during the get-together party, Ariana Grande is seen pouting her lips while hugging her former co-stars. And knowing Grande's obsession with Harry Potter books, her former co-stars knew exactly what to give her as a birthday gift.

Ariana Grande's former Victorious co-stars wrote rap lyrics about Harry Potter.

"I don't know much about Harry Potter, But I know you like that sh*t, I don't know much about Harry Potter, but I bet it's probably lit."

In fact, her Victorious friends even recorded a music video to that song. Ariana Grande received lots of happy birthday wishes this year, with the list of celebrities including such stars as Kylie Jenner, who sent her pal a package of various Lip Kit colors.

Ariana Grande's third LP, titled Dangerous Woman, was released on May 20, and the single of the same name reached the top 20 on the Billboard Hot 100 chart. The singer's new single titled "Into You" debuted at No. 83.

[Photos by Kevork Djansezian/Getty Images for KCA, Charley Gallay/Getty Images for Nickelodeon, & Cindy Ord/Getty Images for SiriusXM]