Who has sold more records Katy perry or Taylor Swift?

As of my knowledge cutoff in September 2021, Taylor Swift has sold more records than Katy Perry worldwide. According to various sources, Taylor Swift has sold over 100 million records worldwide, while Katy Perry has sold over 143 million records worldwide.

However, it's worth noting that record sales figures can change over time, so it's possible that this information may not be up-to-date. For the most current record sales figures, I recommend checking a reliable music industry source or the official websites of the artists.