isn't afraid to show off her husband's physique online — and there's a reason for that!

While walking the red carpet of Clive Davis' Pre-Grammy Gala, which was sponsored by Grey Goose, on Saturday evening, the country superstar chatted with PEOPLE about why she has no problem with uploading shirtless shots of husband  on social media.

"We don't post that much, we're really bad at it, but we're trying to get better," Lambert, 39, said of their social media habits, before adding of her husband's sexy pics, "If you look like that, you got to share your gift."

Lambert most recently , 31, as part of an Instagram photo compilation in celebration of their fourth wedding anniversary last month. The photos go from sweet to steamy in the later slides, where her beau strips off his shirt for the camera and poses with his wife.

"Celebrating 4 years married today with my main squeeze @brendanjmcloughlin 💍💕. Happy anniversary babe! You are the best," Lambert captioned the photo series, before adding, "(Y'all are welcome for the last two pics) 😍🤠" — referring to McLoughlin's shirtless shots.