Lachlan shared photos from the big day with the pair's twin daughters Lulu and Lottie, two, posing alongside them. In another snap, Dana's son Jasper, seven, from a previous relationship, happily posed alongside his mum.
Dana wore a simple white gown for the event, while Lachy wore a green three-piece suit.
"Our little world - our colours," Lachlan wrote alongside a snap of himself, Dana and their daughters. "At the start of our relationship and only after meeting Jasper twice, one night while @dana_stephensen was putting him to bed he looked up and said 'mummy, your colours have changed!'
"He was three at the time and ever since that beautiful moment, our little family has had a rainbow colour theme running through everything we do."
Dana also shared a series of snaps, writing, "Always, always, always. Ever, ever, ever..."
The Wiggles account shared their congratulations alongside some snaps, with the caption reading, "A huge congratulations to @lachy_wiggle and @dana_stephensen on their beautiful wedding! The entire Wiggles team is so thrilled for them, and wish the happy couple all the best into the future."
Former Yellow Wiggle Emma Watkins, who was previously married to Lachy, commented on Lachy's post, sharing her support for the pair with love heart emojis.
Emma and Lachy wed in 2016 but announced their split two years later, remaining friends ever since.
During an interview with Stellar in 2019, Emma revealed she predicted Lachy and Dana would be a great match.
"Dana and Lachy have a similar energy, and I said to a friend that they would be perfect together," she said.
"But she was in a relationship, so I didn't say anything to him."
A source revealed last year when Emma left the Wiggles that her decision was partially to do with distancing herself from her ex.
"She and Lachy do have a great relationship for exes, but it's difficult to completely move on when you're spending so much time with your ex," an insider claimed to Woman's Day.
"She's genuinely thrilled he found someone else and became a dad, but naturally it's also a bit painful."
Emma also got married this year to musician Oliver Brian.
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