Anna Kendrick doesn't think the public need to about Lorde's boyfriend.

The Pitch Perfect star told her Twitter followers that it was "none of our business" to be talking about the young Royals singer's beau, after an article was published with facts about James Lowe.

Anna is known for being vocal on her social media sites, and often tells fans of her latest musings.

"'5 things you need to know about Lorde's boyfriend:' Nothing. Nothing, cause she's 17 and it's none of our business. #Blech (sic)," Anna told her 2.4million followers.

Although the 28-year-old actress wasn't up for speculating about other people's lives, she was more than happy to reveal some weird facts about herself.

Talking to the Anna confessed to having a phobia of clowns.

"I guess, clowns," she said when asked what she was most afraid of. "I feel like I just heard that most children are afraid of clowns. Like 60 per cent of children don't like clowns, or something like that. I don't know why they're still around."

She also admitted she doesn't think it's impolite to recline your seat back on a plane, though she attributed her blasé attitude to this annoying habit to her shortness.

"Is it not okay?" she asked when faced with the question: 'Is it okay to recline your seat on a plane?' "I mean, who doesn't recline their seat on an airplane?! You mean, like, out of politeness? I have really small legs, so I don't really think about it because somebody could recline their seat all the way back and it doesn't affect me."

The star attended Sunday night's Grammy Awards, but said she's confused as to why she was invited.

Looking glamorous in a revealing Azzaro gown, Anna enjoyed meeting Katy Perry and Beyoncé Knowles.

"[The Grammys were] really crazy, really fun! I don't really know why I'm invited to these things lately, but because I had a song out this year [Cups from Pitch Perfect], I've been invited to stuff like the Grammys, which is a total privilege and the most random thing possible," she laughed.