Taylor Swift, Miley Cyrus Diss: Harry Styles' Ex Deems 'Wrecking Ball' Twerker's Sexy VMAs Performance 'Disgusting, Grotesque'

Apparently, Taylor Swift thinks that Miley Cyrus' controversial performance at the 2013 VMAs was totally "disgusting" and "grotesque." Wonder if the infamous "Wrecking Ball" twerker will fire back like she did at Sinead O'Connor?

So here are the deets - Harry Styles' ex was overheard dissing 20-year-old Cyrus at a recent SoHo House party in Toronto. According to Life & Style, Swift allegedly deemed Cyrus' raunchy "Blurred Lines" onstage rendition "grotesque" and "disgusting."

That's it - the popular gossip outlet doesn't even provide any sources.

Swift's rep (who was at the event), insists such rumors are totally made-up:

"The party at the Soho House was very crowded and loud, and Taylor was seated at a private booth... You had to practically shout at somebody for them to even hear what you were saying in that room, so the very idea that anybody would have 'overheard' anything at that party is far-fetched, at best."

Do Mstars readers believe Swift would make such a catty remark towards the Bangerz songstress? Maybe the "Red" starlet's just "jealous" like Sinead O'Connor...