Gladys Knight performs onstage during a tribute to television host Oprah Winfrey during the 38th Annual Daytime Entertainment Emmy Awards at the Las Vegas Hilton in Las Vegas, Nevada, June 19, 2011.

*Oprah Winfrey was not at the Daytime Emmy Awards last night at the Las Vegas Hilton, but it didn’t stop Gladys Knight, Celine Dion and Ellen DeGeneres from joining a number of stars to honor the talk show host in a special musical tribute.

Oprah was given a Crystal Pillar Award at the ceremony in recognition of the way she has changed the face of daytime television. She accepted her accolade in a video, surrounded by her staff at Chicago’s Harpo studios.

“We are sorry we couldn’t be there to celebrate,” she said in the clip. “On behalf of the entire team, we thank you for honoring our show, we thank you for 25 years. This show has served as a platform to enlighten and entertain our millions of viewers … it has been a phenomenon that none of us could have imagined in our wildest dreams. None of this would have been possible without the support of the best team in television. Thank you!”

Gladys Knight performed “That’s What Friends Are For” as a montage of the star’s shows played behind her (scroll down to watch), while Celine gave a rendition of “Because You Loved” Me’ from the stage at Las Vegas’ Caesar’s Palace in Oprah’s honor.

In a video message, Ellen said: “For the past 25 years, the world has been lucky to call you a friend. I will miss you and I love you.”

Barbara Walters of “The View” said of the star: “Oprah, we are always getting asked to present each other with awards … now, you are getting the Crystal Pillar Award because of your enormous contribution to daytime television. In this, you are unique and unsurpassed.”

Meanwhile, soap opera “The Bold and the Beautiful” was the biggest winner at the ceremony – which was hosted by game show host Wayne Brady – taking home four awards including accolades for drama series, supporting actress in a drama series for Heather Tom and younger actor in a drama series for Scott Clifton, while the directing team were jointly honored along with the “Young and the Restless.”

The lead acting awards went to Michael Park for “As the World Turns” and Laura Wright for “General Hospital.”

The other acting prizes went to Jonathan Jackson for his supporting role in “General Hospital” and to Brittany Allen as younger actress in “All My Children.”

“The Ellen DeGeneres Show” won the prize for entertainment best talk show for a second year, and “Dr. Oz” best informative talk show for the first time.

Ben Bailey of “Cash Cab” was named best game show host for a second year. He was late taking the stage at the Las Vegas Hilton, admitting that he was in the bathroom when his name was called.

The best talk show host prize was a tie between Mehmet Oz of “Dr. Oz” and Regis Philbin and Kelly Ripa of “The Regis and Kelly Show.”

Quiz mainstays “Jeopardy!” and “Wheel of Fortune” shared the Daytime Emmy for best game show.

In addition to Winfrey, the ceremony also included presentation of career achievement awards to game-show hosts Alex Trebek and Pat Sajak.