"Any more babies? Arie?," Lauren, 29, asked in a Wednesday video posted to Arie's Instagram Story.
"No," Arie, 39, firmly replied, shaking his head. "No more babies!"
Lauren therefore asked her husband, "Vasectomy time?"
"Yes!" Arie confirmed.
Lauren laughed and told their Instagram followers, "You heard it first!"
In the video -- which was one of many clips posted as part of the couple's Q&A session with fans -- Lauren and Arie each had a baby strapped to their chest.
The lovebirds were drinking wine and dancing in their kitchen for about 20 minutes before the twins had to be fed again.
Lauren and Arie previously said they are starting to "figure out" how to raise three children also it's "complete chaos" at night because the babies have different sleep and awake schedules, according to Us Weekly.
But Arie and Lauren have said they complement one another really well when it comes to taking care of their little ones.
"If she's having a mental breakdown, I get it together," Arie reportedly shared of his wife, who was hospitalized with postpartum health issues in July.
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"That is what makes us great at co-parenting. We can sense when the other needs a little bit more heavy lifting on the parenting end."
As for where they're living with three kids, Arie and Lauren recently bought a house in Hawaii, although they don't stay there "full-time."
The pair plan to split their time between Hawaii and Arizona, spending the hotter summer months in Hawaii.
Lauren finished Arie's season of The Bachelor in second place when Arie actually chose Becca Kufrin as his winner and popped the question to her during the Final Rose Ceremony, which aired in March 2018.
But weeks after getting engaged, Arie decided to dump Becca because he claimed he was still in love with Lauren, and then he begged Lauren for a second chance.
Once Lauren took the former racecar driver back, Arie proposed marriage in March 2018 onThe Bachelor: After the Final Rose after Season 22 aired on ABC.
Arie and Lauren subsequently moved into their first home together in Phoenix, AZ, in April of that year.
The pair announced they were expecting their first child together in November 2018 and revealed two months later that Lauren was pregnant with a daughter.
Arie and Lauren tied the knot at Haiku Mill in Maui, Hawaii in January 2019, only four months before Alessi's arrival.