The Saturdays' singer, 25, tied the knot with retired footballer Wayne, 34, in July but up until now has kept the pictures to herself.
She was obviously reminiscing this week, as she posted two beautiful black and white snaps from the day.
In the first, she is gazing lovingly at her new husband, as they hold hands. Her dress is gorgeous: simple but elegant and exactly what we expected from Frankie.
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But the second picture will melt your heart. Frankie and Wayne are cradling their nine-month-old son Parker, as they both plant a kiss on his head.
She captioned the pictures: "What an amazing day… Made even better by this little man."
Frankie and Wayne's ceremony took place at Woburn Abbey in Bedfordshire, and was attend by her Saturdays' band mates Vanessa White, Rochelle Humes, Mollie King and Una Foden.
It was also reported that the newlyweds were serenaded by JLS, who reunited for a one off performance for their special day.
She is currently taking part in Strictly Come Dancing, and rehearsals are obviously taking it out of her as she was noticeably absent from last night's Pride of Britain awards, despite Vanessa, Rochelle and Mollie attending.