What is the effect on Taylor Swfts voice when she says 'Troublem trouble' in that song?

Its like a semi-distorted old time radio but Im having trouble finding exactly how its done. Any ideas?

Submitted February 15, 2017 at 01:05PM by BostonNewspaper https://www.reddit.com/r/edmproduction/comments/5u8aa5/what_is_the_effect_on_taylor_swfts_voice_when_she/?utm_source=ifttt

Javier Rodriguez