The presenter of US primetime show So You Think You Can Dance decided to share a gorgeous pic of her seven-month-old on Friday (19 August).
Sitting on top of a bean bag, the little tot gazed outside as his proud mama snapped away.
We can't even deal with the cuteness of this picture!
Cat had clearly just taken a delivery of some new house goodies as she captioned the shot, "Excitement has reached fever pitch here in the Kielty household!!! Soho Home goodies have arrived!!!"
Cat, from West Bromwich, and her Northern Irish comedian husband Patrick Kielty secretly tied the knot in 2012 during an intimate ceremony in Rome. They relocated to the States and welcomed their first child together this January.
They have been keep to keep their little one out of the limelight ever since and very rarely sharing baby-related pictures online.
We got a tiny glimpse of her son earlier this summer when Cat took a snap of Patrick and the tot watching the football.
She added, "The lads..."
Meanwhile, Patrick looks like he's taking to dad duties like a duck to water, don't you think?
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