The former Frasier star, 57, and his bride exchanged vows a second time at the Little Church of the West in Las Vegas. The intimate ceremony was partly inspired by the 1964 Elvis Presley film Viva Las Vegas.
The bride donned a custom Peter Langner baby-doll dress and the groom wore a Tom Ford suit. The ceremony comes a month before Kayte, 31, is set to give birth to twins — the couple's first children together.
"I've always wanted shotgun wedding pictures so we can show the kids later on!" Grammer told the magazine. "We wanted to celebrate and rededicate [ourselves] to how much we love each other and to our growing family around the bend."
Said the four-time Emmy winner of his bride, whom he first married in New York last February: "I love that she had the courage to marry me twice!"
The second season of Grammer's latest series, Boss, premieres on Friday, Aug. 17 at 10/9c on Starz.