The 23-year-old welcomed a baby boy yesterday (December 15) named Beaux, the final letter in his name being a deliberate reference to Bird's role in the show.
"Can confirm, Baby Shoe - Beaux Phillips Bird has arrived," a post on the official 2 Shoes Twitter profile read. "Both fine x So EMOSHE right now, and so proud of my shoe."
Bird discovered that she had fallen pregnant with boyfriend Greg Phillips' child prior to the Boot Camp stage of the contest, but still progressed to the final 16 along with her singing partner Lucy Texeira.
2 Shoes were eliminated by mentor Tulisa Contostavlos on the first live show and lost out in the vote that saw Amelia Lily return to The X Factor as Frankie Cocozza's replacement.
2 Shoes revealed to Digital Spy in October that they hope to land their own chatshow.
Watch 2 Shoes' first X Factor audition below: