The "Bad Blood" made an appearance at the iHeartRadio Music Awards last weekend where she wore a skin tight black sequinned jumpsuit by Yves Saint Laurent that accentuated her assets.
The Twiterrati was quick to speculate that the 26-year-old's derriere looked different than before, allegedly due to unnatural methods, reports aceshowbiz.com.
Some Twitter users slammed the singer, accusing her of having her derriere lifted.
One user wrote: "Fake butt alert! So, Taylor Swift went from flat pancake ass to normal sized booty overnight? I'm done."
"Taylor Swift has butt implants now?" a user speculated.
Meanwhile, another user said: "Taylor swift has had fat injected into her butt." (IANS)