The baby, Iman Tayla Shumpert Jr., was born at 6:42 a.m, according to the post. Taylor nicknamed her "Junie."
Taylor wrote that she did not realize she was in labor until she could feel her baby's head. She said Shumpert used the cord from a pair of headphones to tie off the umbilical cord as the couple waited for the ambulance to arrive minutes later.
The birth came approximately three weeks before the expected due date of Jan. 16, 2016, which Shumpert previously shared on his Facebook account.
Shumpert and Taylor got engaged in November, with Shumpert proposing to her with a ruby engagement ring on the night of her baby shower.
Shumpert was ruled out of the Cavs' game against the Oklahoma City Thunder on Thursday night t with a right groin strain. According to the Cavs, his playing status is questionable moving forward.