On the June 10, 2008 episode of ECW, Tiffany made her main roster WWE debut, the on-screen Assistant General Manager under Theodore Long. Tiffany participated in the Halloween costume contest on October 26 at the Cyber Sunday pay-per-view, and was dressed as a nun. Tiffany made her in-ring debut in a 16-Diva tag team match on the 800th episode of Raw, teaming up with Mickie James, Candice Michelle, Michelle McCool, Brie Bella, Kelly Kelly, Eve Torres and WWE Hall of Famer Mae Young against Beth Phoenix, Layla, Lena Yada, Jillian Hall, Natalya, Maryse, Victoria and Katie Lea Burchill, which her team lost, despite Tiffany never being tagged into the match.
On the March 30, 2009 episode of Raw, Tiffany competed in an 18-Diva tag team match, which she won for her team by pinning Katie Lea Burchill. On April 5, Tiffany made her WrestleMania debut as she competed in a 25-Diva battle royal at WrestleMania XXV to crown the first-ever "Miss WrestleMania", which was won by Santina Marella. On the April 7 episode of ECW, Tiffany was announced by Theodore Long as the new General Manager of ECW due to Long returning to SmackDown to again become its General Manager. As the new General Manager, her first order was to announce an elimination chase to determine who would face Jack Swagger for the ECW Championship at Backlash, with the participants being Mark Henry, Tommy Dreamer, Christian and Finlay, which Christian would ultimately win. In late June 2009, Tiffany was promoted to full-time General Manager of ECW. However, Tiffany was absent from television due to a storyline car accident with William Regal. She returned on the October 6 episode of ECW. On the final episode of ECW on February 16, 2010, Tiffany speared Rosa Mendes after she and Zack Ryder interfered in the ECW Championship match.
On the March 5, 2010 episode of SmackDown, Tiffany made her debut for the brand in a backstage segment, being welcomed by Rey Mysterio. On the March 12 episode of SmackDown, Tiffany made her in-ring debut, winning a match against Michelle McCool via disqualification after Vickie Guerrero interfered. Following the match, McCool, Guerrero, and Layla attacked Tiffany, until she was saved by Beth Phoenix. The following week, Tiffany and Phoenix defeated McCool and Layla (collectively known as LayCool) in a tag team match, and again in a rematch on the April 2 episode of SmackDown.
Tiffany then formed an alliance with Kelly Kelly, with the pair being dubbed "The Blondetourage", and they continued to feud with LayCool. On the June 12 of SmackDown!, Tiffany lost her first singles match to Layla after an interference from McCool. On May 21 episode of SmackDown!, Tiffany and Kelly lost to LayCool in a tag team match. On the July 2 episode of SmackDown!, Tiffany managed Kelly, where she defeated McCool, and during the match Tiffany stopped Layla from interfering. On the July 10 episode of Superstars, Tiffany and Kelly again lost to LayCool. On the July 16 episode of SmackDown!, Tiffany managed Kelly and Chris Masters, where they defeated Layla and Trent Barreta after interference from Rosa Mendes. She also managed Kelly in her WWE Women's Championship match against Layla at Money in the Bank. On July 23 episode of SmackDown!, Theodore Long announced that Tiffany would receive a match for the Women's Championship, which occurred on the July 30 episode of SmackDown, however she failed to capture the championship. She was originally scheduled to fight Layla, however, she instead fought McCool, as the two defended the title under the Freebird rule.
Tiffany was released from her contract on November 19, 2010.