The 'What About Us' singer took to Instagram last night to tell fans that her baby boy was growing up fast.
Posting a sweet photo of a wide-eyed Tadhg dressed in a white knitted cardigan, Una said: "Can't believe this little lad is 2 months old already!"
Isn't he adorable?!
Irish star Una and her rugby star husband Ben welcomed Tadgh in February. The couple are already parents to three-year-old daughter Aoife-Belle.
Una has been sharing plenty of new snaps of her newborn, including one of Aoife-Belle being a doting big sister.
Earlier this month, after sharing more photos of her boy, Una gushed: "My heart could burst with how in love I am."
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Copyright: Instagram @fearnecotton4