August 29, 2017 11:35 AM

The Osbourne clan is growing by one more!

Lisa Osbourne is pregnant, she shared on Instagram Monday with a mirror selfie featuring husband Jack Osbourne. In the snap, Lisa is throwing up a rock-and-roll hand sign while a suit-clad Jack, 31, gazes down at her baby bump, visible under Lisa’s fitted floral dress.

“Literally ate the biggest burrito ever 🌯,” Lisa, 30, captioned the shot jokingly.

The little one on the way joins big sisters Andy Rose, 2, and Pearl Clementine, 5.

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Jack and Lisa regularly share photos and videos of their daughters on social media, and have been candid with PEOPLE about how much they value family time.

“Sometimes it’s really hard whenever they’re super little and they just wanna be with you and on you all the time,” Lisa said in June. “[Sometimes] at the end of the day I’m touched out — I’m like, ‘Everybody just back off, I don’t want anyone within 10 feet of me.’ “

“But they’re only gonna be this little for so long, and you want to absorb all those cuddles,” she added. “I just tell myself, ‘This is not gonna last.’ I try to really savor it.”

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Jack has looked within himself to provide a good example for his daughters — not only in how they live their own lives and craft their own values, but in how he models a potential life partner.

“My whole thing is if I’m a great dad — you know, if you believe in the kind of Freudian theory that you’re attracted to what your parents [are like] — so I figure if I’m not a total piece of s—, she probably won’t end up dating or marrying a total piece of s—,” he told PEOPLE of Pearl in October.

And from the sounds of it, Jack and Lisa are a pretty balanced pair in terms of parenting. “I’ll let them venture out a little bit more than my wife will — my wife’s very like, ‘No, no, no, no, don’t, she could get hurt,’ ” Jack explained at the time, adding jokingly, “I’m like, ‘Eh, put her on a surfboard, we’ll push her into a wave, she can swim.’ “

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