By Jen Juneau and Kaitlyn Frey
May 04, 2018

Forget Heart Break — heart, prepared to be fully melted.

PEOPLE caught up with Lady Antebellum frontwoman Hillary Scott, who gave birth to twin daughters Emory JoAnn and Betsy Mack just three months ago. And the new mom of three says they recently hit an adorable milestone that made her "laugh slash cry."

"The other day when I was nursing them … I looked down and their hands are clasped together. So I am like, ‘What?!' " said the singer, 32, who's also mom to 4½-year-old daughter Eisele Kaye with husband Chris Tyrrell. " ‘I have to take a picture of this! This is the sweetest!' "

"They're becoming more aware of one another and they're starting to coo and kind of laugh, and smile a ton," she adds. "It is really sweet. But looking down and seeing my babies holding hands while nursing may be the sweetest thing I've ever seen."

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Julie Paisley Photography
Julie Paisley Photography

"I think they are just now getting to the age where they are aware of each other visually," Scott — who has teamed up with Herbal Essences for its Pregnant Women Can campaign — says of the baby girls' evolving dynamic. "They've always been aware of each other, just like, sixth sense."

"You put them next to each other and their breathing will sync up. They're starting to look at each other and be like, ‘Oh, you're another person,' " she explains.

Julie Paisley Photography

Scott previously told PEOPLE that while she hits the road starting in July for her band's Summer Plays on Tour, drummer Tyrrell will stay behind to care for their children.

"Sometimes you just have to rip the Band-Aid off … at some point, I am going to be away from them for a night," she says when asked how difficult it has been to attend events like the recent ACM Awards, which she recalls as feeling "20 hours too long" emotionally.

"Their daddy took great care of them," Scott raves of her husband. "He is the best dad in the whole wide world, so I don't worry a bit when I am gone."

    This Story Originally Appeared On People