'At the end of our summer holidays, I walked into the most beautiful surprise - a room filled with the most incredible flowers and Lachy singing at his piano and then asking me to marry him. It was such a surprise and so special. Our faces say it all,' she began.
'It was something very meaningful for us to both have the opportunity to propose to one another, each in our own way. Last week, with the most beautiful (and excited!) little boy by my side in a special bow tie, it was our time to ask Lachy our special question - and it was so, so wonderful.'
The Purple Wiggle went public with the romance in October 2019 by posting a snap to Instagram.
At the time, it was a little over a year since he announced his shock split from his Yellow Wiggle wife, Emma Watkins, after just two years of marriage.
A ballet dancer, Dana met Lachy on The Wiggles' set.