Menounos' first WWE appearance came on October 12, 2009, when Menounos joined Nancy O'Dell in guest hosting WWE Raw. She made her in-ring debut that night in a six diva tag team match with Gail Kim and Kelly Kelly against Alicia Fox, Beth Phoenix, and Rosa Mendes; Menounos' team was victorious, with the match highlighted by Menounos slapping the much larger-statured Phoenix.
On December 11, 2011, at WWE Tribute to the Troops, Menounos returned and teamed with Alicia Fox, Eve Torres, and Kelly Kelly to defeat the team of The Bella Twins (Brie and Nikki) and The Divas of Doom (Phoenix and Natalya) where Menounos got the win for her team by pinning Phoenix.
Menounos continued her feud with WWE Divas Champion Phoenix after Phoenix and Eve Torres interrupted an interview segment with Kelly Kelly. This led to tag team match at WrestleMania XXVIII with Menounos teaming with Kelly Kelly to take on Phoenix and Torres. Menounos and Kelly were successful in defeating Phoenix and Torres on April 1, 2012, at WrestleMania, with Menounos pinning Phoenix for the win.
On April 6, 2013, at Madison Square Garden, Menounos inducted Bob Backlund into the WWE Hall of Fame. On August 18, 2013, at SummerSlam Axxess, she teamed up with Natalya to defeat Brie Bella and Eva Marie.
On August 17, 2014, Menounos was seen at the SummerSlam pay-per-view, appearing in the crowd and later in a backstage segment with Stephanie McMahon.
She hosted the WWE Hall of Fame red carpet pre-show for six years in a row from 2014 to 2019. She also appeared during the event as a guest backstage interviewer for WrestleMania 31, WrestleMania 32 and WrestleMania 33. In 2016, Menounos appeared in one episode of the WWE Network's Swerved and was a backstage interviewer for SummerSlam. On January 28, 2018, she served as the special guest ring announcer for the first-ever women's Royal Rumble match at the Royal Rumble.