Ariana Grande apologizes for backstage behavior after Elvira called her out for 'worst celebrity encounter'

Mistress of the Dark Elvira called Ariana Grande out over an awkward encounter and the singer has since responded.

On October 18, Elvira - real named Cassandra Gay Peterson - took part in a Q&A session at Knott's Scary Farm in Buena Park, California and spoke out about an alleged encounter she had with Wicked star Ariana Grande.

And Grande has since opened up about the incident and apologized to the 'Queen of Halloween'.

Alongside being asked many questions about her career as an actor, Elvira was also asked about experiences with other celebrities - including Grande.

The pair reportedly met at one of Elvira's meet-and-greet sessions, Elvira saying Grande bought a whopping 21 tickets and came backstage and allegedly 'asked if [Elvira] could take pictures with all of her friends and relatives'.

Elvira claimed she took photographs with and signed autographs for every single guest Grande brought backstage, however, when she turned around to the singer and asked for a photograph with her, Grande allegedly said: "No, I don't really do that."

And not only that, but the Mistress of the Dark claimed Grande actually 'left before [the] show started,' leaving her guests behind.

Grande has received backlash online over the story and she's been branded online as Elvira's 'Worst Celebrity Encounter'.

Elvira even took to her Instagram page yesterday (October 21) to share an article about the incident, with Grande taking to the comments to respond to the controversy.

Ariana Grande has since responded to Elvira's post (Instagram/ @therealelvira)

Taking to the post, Grande noted she was 'so disheartened to see' the article and Elvira's comments.

She continued: "I actually don’t even remember getting the chance to meet you because i had an anxiety attack and to my memory, left before the rest of my family (this was around seven years ago and at the time i was really not great with being in public crowds or loud places)…

"But if i’m misremembering this moment, i sincerely apologize for offending you so."

The singer thanked Elvira for 'being so nice' to her mom, noting her mom told her 'how lovely' Elvira was.

"She might have different feelings about that now but i’ll talk to her… clearly, we all have our days!" Grande added.

She resolved: "Sending love always. You’ll always be our queen of halloween!"

And fans have been quick to praise the singer for her handling of the issue.

One Instagram user wrote: "This is why we love you ! always responding with love and explaining yourself even when you shouldn't have to. you're so strong for enduring all that you unfortunately have to endure and your strength is so admirable. love you so much more than i can express."

UNILAD has contacted Elvira's representatives for comment.

If you or someone you know is struggling or in crisis, help is available through Mental Health America. Call or text 988 to reach a 24-hour crisis center or you can webchat at 988lifeline.org. You can also reach the Crisis Text Line by texting MHA to 741741.