In a post on, Underwood revealed her pets somehow managed to lock themselves in the vehicle with baby Isaiah on Saturday (11Jul15), and she had no choice but to smash the glass to free him.

She tweeted, "When your dogs manage to lock themselves, all your stuff & the baby in the car & you have to break a window to get in #whatarethechances."

The Grammy winner later clarified that her brother-in-law was the one to physically break-in, and added, "My bro-in-law was actually the window breaker in the "dogs-locked-the-car-door" incident today! But all is good now!... Minus the broken window, of course!"

The 2005 American Idol winner gave birth to Isaiah, by her hockey player husband Mike Fisher, on 27 February (15).