Emma Roberts Once Hung Up on Britney Spears After Thinking Her Surprise 8th Birthday Phone Call Was a Prank

Roberts recalled how she was "very wrong" in thinking her family was pranking her with a call from the iconic singer

In honor of April Fools’ Day, Emma Roberts is looking back on a moment when she mistakenly thought she was being pranked with a phone call from Britney Spears.

On Monday’s Live with Mark and Kelly episode, the American Horror Story: Delicate star admitted that she is “always nervous” about being pranked.

“I'm on guard year-round, especially with my family and friends, but I've gotten it wrong before,” Roberts, 33, said. “Very wrong.”

Related: Kim Kardashian Isn't Afraid to Kiss Emma Roberts or 'Snap a Few Necks' in Chilling AHS: Delicate Part Two Trailer

The actress then shared a memory of a childhood birthday, when her mother, Kelly Cunningham, and aunt, Julia Roberts, surprised her with a call from Spears, 42.

“It was my birthday and I think I was 8 or 9, and this was back in the day of landlines,” she shared. “My mom and my aunt handed me the landline and said, 'Someone's on the phone for you.' And I was like, 'Who?'”

The Unfabulous alum remembered the pop star saying, “Happy birthday, Emma. It's Britney Spears.” But she mistakenly thought it was a prank, adding, “And I looked at them and hung up and was like, ‘Mm-hmm, nice.’ And they were like, 'No, that was her.'”

Related: Emma Roberts Gushes About What a 'Pro' Kim Kardashian Is on AHS: Delicate: 'I Love Her So Much' 

<p>Kevin Mazur/Getty; Jon Kopaloff/FilmMagic</p> (L-R) Emma Roberts and Britney Spears.

Kevin Mazur/Getty; Jon Kopaloff/FilmMagic

(L-R) Emma Roberts and Britney Spears.

“I was — still am — the biggest Britney Spears fan,” Roberts explained. “And I literally started crumbling and I was like, ‘Can we get her back on the phone?’ They got her back on the phone.”

Kelly Ripa joked, “Star 69 or whatever.”

“I was like click right [away],” Roberts added as she indicated hanging up the phone. “I’m so sorry, Britney.”

Related: Emma Roberts Celebrates Son Rhodes' 3rd Birthday: 'Happy Birthday to the Sweetest Soul'

Mark Consuelos asked what the two had talked about, but the Scream Queens alum admitted she was too shocked to have a conversation.

“I was so mortified and nervous and I was 8, so I just was like, ‘Thank you so much,’” she said. “I'm shaking thinking about it.”

Roberts admitted that she “probably” cried after the experience but “in that moment, I thought I got them. I was like, ‘Nice try, everybody. Good prank.’”

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American Horror Story: Delicate Part 2 premieres April 3 on FX.

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