The Saturdays star and her footballer fiancé Wayne Bridge became first time parents in October when Frankie gave birth to Parker Bridge.
Since then, the proud parents have largely kept their little boy away from the spotlight, but on Sunday night (5 January), Frankie couldn't resist sharing her latest picture of little Parker with fans.
Alongside the photo, she added: "Cuddles."
Frankie, 24, was named as a celebrity trendsetter of 2013 last month, after Parker was voted the top celebrity baby name of the year.
The survey, carried out by bounty.com, said: "Already there have been 148 babies called Parker born this year and, as he was only born in October, we expect that Parker will rise up the baby names chart in the future."
Meanwhile, Frankie rejoined the Saturdays just before Christmas, following maternity leave. The brunette marked her return to the band at the taping of the Top of the Pops Christmas special in December.
Frankie's bandmates - Una Healy, Rochelle Humes, Vanessa White and Mollie King - tweeted from the group's official account: "Had SO much fun filming Christmas Top Of The Pops today...especially with all 5 of us back together!!"
Watch The Saturdays' video for 'Disco Love' below: