The 'What About Us' singer posted the cute snap on Instagram last night (11 march) of her growing baby boy.
Tadhg can be seen wrapped up warm in a grey cardigan while laying down in a cot and looking up at the camera - just look at those big eyes!
Una, who is one fifth of The Saturdays, didn't stop there with the cute pics, as she also shared another one of her husband Ben Foden cradling Tadhg in his arms.
In the snap, the little tot looks up to his dad in a tender moment. We reckon this is definitely one for the photo album!
Una commented on the black and white photo: "My heart could burst with how in love I am."
Irish star Una and rugby star Ben welcomed Tadgh in February. The couple are already parents to daughter Aoife-Belle, who will turn three tomorrow.
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