It really depends on their own income, most Cover corp needs first to approve the design. Then the talent does their thing, this kind of new outfits and the rig cost around 2000 to 3000 usd. So new outfits depends on a lot how much money they have it could be a new outfit every 3 months, every 6 months even a year.
Discussion
I wonder how many human YouTubers spend that much on clothes.