Kim Kardashian -- The Thong About Being Pregnant

Kim Kardashian is being very transparent about her pregnancy.

While out with her baby daddy Kanye West, the 32-year-old mom-to-be rocked a pair of killer heels and a sheer little black dress that exposed her maternity thong in NYC on Wednesday.

With her growing belly getting all the attention these days, it's nice to see Kim isn't neglecting her first baby ... her booty bump.