Kardashian, 33, said Kanye got upset when she recently put North into a two-piece swimsuit for her debut dip in a pool, reported Contactmusic.
"(He) is a little uncomfortable with North wearing a bikini. I tried it once and it did not go over well. It has to be a one-piece," he said.
The couple took their baby girl swimming for the first time in Miami, Florida in late November.