Ariana Grande posted a video of herself kissing her former Victorious co-star, Elizabeth Gillies, who also happens to be her best friend.

However, the “One Last Time” singer claims she didn’t mean to post the video to her nearly 45 million followers. She captioned the Instagram video, "my favorite video of all time @lizgillz. (p.s. this was totally posted by accident)."

The video shows the girls getting ready to kiss each other on the lips, but not before Gillies tells Grande, "It has to be pretty, though.”

After they do it, they both freak out and laugh hysterically. Grande then took to Twitter to emphasize that she didn’t post it on purpose, and instead meant to send it to Gillies.

“I WAS EDITING IT IN INSTA TO SEND TO HER AND IT POSTED ACCIDENTALLY BUT ITS GREAT SO WHATEVER,” she tweeted.

Gillies has previously discussed her strong bond with Grande, who she told People is “like blood to me, she's like my sister.”

image courtesy of Jennifer Graylock/INFphoto.com