How cute?! Carrie Underwood welcomed her son, Isaiah, 3, in February 2015, but it wasn't until Saturday, June 30, that the little boy attended his mom's concert for the first time. The country star took to Instagram to share a sweet photo of him at the event in Atlantic City, NJ.

"This was about 30 seconds before I went on stage tonight…❤️❤️," she captioned the black and white snapshot of her staring into Isaiah's eyes while she hugged him backstage. Carrie's husband, Mike Fisher, also shared a photo of the two in the crowd with the caption, "Izzy’s first show! He’s proud of his momma!" We bet Isaiah loves her new song "Cry Pretty."

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Izzy’s first show! He’s proud of his momma!

A post shared by Mike Fisher (@mfisher1212) on

Carrie and her husband have been sharing more and more cute videos and pics of Isaiah on Instagram in recent months, especially following Carrie's accident that left her with 40 stitches in her face as well as a broken wrist. Throughout her healing process, the toddler was really there for his mother. "Isaiah’s good medicine, helping her not dwell on the accident," a friend previously told Closer Weekly. "She talks about her stitches and he says, 'I don't care — you're still my girl, mama!'"

And now, fans are crossing their fingers that Carrie and Mike will soon welcome baby No. 2. In fact, many fans believe the blonde beauty is expecting twins. "She's eating far more than she ever did last time she was pregnant and craving foods like dark chocolate and Subway veggie sandwiches," an insider said to Life & Style. "Carrie's also begun scaling back on sessions with her personal trainer."

Carrie and Mike have been plagued by divorce rumors in recent months, so another child could be good for them. The insider added, "It's definitely not to fix anything, but to spread the love. Isaiah is the love of their lives, but they have room in their hearts for more children." Don't you think Isaiah would be the best big brother?