"Fixer Upper" fans were surprised, but happy, to hear HGTV stars Joanna and Chip Gaines will be welcoming their fifth child during their final season.

Chip, 43, tweeted some "hints" leading up to the big reveal, even divulging when and, ahem, how the little one came into being:

Joanna, 39, followed up with a video showing Baby No. 5's heart beating:

Will Chip be right about his boy guess?

Young He or She will join older sibling brothers Drake, 12, and Duke, 9, and sisters Ella, 11, and Emmie, 7. Right now the teams are equal, but this little one will tip the balance.

"Fixer Upper" Season 5 is currently airing on HGTV, and Chip and Joanna revealed this will be their last season.

[Via: People]

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