UPDATE: Khloe Kardashian and Kris Jenner have confirmed the existence of the Kimye baby. Read what they had to say about Kim Kardashian's birth here.
EARLIER: Prepare yourself for a week full of headlines: Kim Kardashian and Kanye West have welcomed their first child, according to TMZ.
Though Kardashian or West has yet to comment on the birth — they'll likely do so on the cover of People — sources tell TMZ that the reality star delivered a baby girl Saturday morning. (Both Kardashian and West's Twitter feed has remained silent since Friday.) Sources also say the baby came five weeks early, most likely to avoid having to share the spotlight with another famous pregnant lady.