Carrie Underwood is mourning the loss of her beloved dog, Ace.  Underwood is also a dog mom to Penny Jean and Zero.

The country superstar took to social media on Monday, April 4, to reveal the sad news, saying: “Last night, my sweet Ace left this world…he will forever live on in our hearts and be forever missed. He was there for me when I was on my own trying to figure out life when it was at its craziest! He was with me through 3 houses, 6 tours and 2 kids…always ready to snuggle and play…through all the highs and lows,” she added. ”He was a true friend and a good boy till the very end. I love you, sweet Ace…see you on the other side…”

Ace, a rat terrier who was a rescue dog, played an important role in various milestone moments throughout Underwood’s life, including escorting her down the aisle during her and husband Mike Fisher’s wedding. Underwood told PEOPLE in July 2010: “He’ll be one of the ring bearers – he’s like my kid. Ace is such a big part of my life.”  Ace also helped Underwood announce her first pregnancy, and even appeared on the cover of Redbook Magazine with Underwood in 2016.

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