The singer, 24, debuted his new style on social media last week and posted more pictures over the weekend (March 28-29) after teasing the longer, bob-style cut in a series of black and white snaps.
However, after he shared a side-profile image, which is the cover art for Troye's new single, "Take Yourself Home", fans began drawing comparisons between him and actress Saoirse - prompting the star himself to joke about his appearance.
Posting a side-profile of the Irish actress sporting a similar, shoulder-length haircut from the movie "Lady Bird" on his Instagram Story timeline, Troye penned in the caption, "Me."
He added: "It's lit."
"Hello my ronanisers, it's me..pop QUEEN Saoirse Ronan.." the "My My My!" star joked in a later post, before writing, "Where my ronanisers at?!"
"Take Yourself Home", from Troye's upcoming third studio album, is released on Wednesday.