Luke Bryan marks major day for rarely-seen son Bo with heartwarming photo

fans felt their hearts melt as his wife Caroline took to social media

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to celebrate their son Thomas "Bo" Bryan's birthday.

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Not only was it his special day, but it also marked a milestone one,

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as Bo had turned 15, becoming quite the grown-up and a lookalike of his famous dad.

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Caroline shared a slew of heartwarming pictures of their son, including a throwback,

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alongside one hilarious moment caught in their family home.

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In the video, Luke was seen bouncing on his son's bed, shaking him awake

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while playing a rap version of "Happy Birthday," cheering his groggy son on with: "Go BoBo!"

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