Ready for her grand entrance! Mariah Carey's wedding drama is front and center in the latest trailer for Mariah's World, launching on E! Sunday, December 4.

The eight-episode docuseries' new promo shows the pop star dancing and getting flirty with her backup dancer, Bryan Tanaka, and it's clear that members of Carey's staff had concerns about their bond. (News broke in late October that Carey split from fiancé James Packer, with rumors swirling that she and Tanaka were romantically involved.)

"Tanaka does have a crush on her," someone on Carey's team says in the clip. A second staffer replies, "What are we going to do with him?" The first person points out, "You saw it — he's not leaving that easily."

A source previously told Us Weekly that Carey and Tanaka are "close" but that things were not "sexual" between them. "She didn't cheat," the insider said.

Another scene shows the "Hero" singer trying on her wedding dress, complete with a tiara, naturally. She addresses media reports about the engaged couple's plans for a lavish ceremony: "People believe that I want to have, like, endangered species at my wedding."

Tense moments include her team dealing with a medical emergency, a staffer worrying about getting fired and Carey reacting to a crowd booing her at a concert.

Luckily, there are plenty of upbeat scenes, including the Grammy winner spending time with ex-husband Nick Cannon and their 5-year-old twins, Monroe and Moroccan.

Watch the promo above. Mariah's World premieres on E! Sunday, December 4, at 9 p.m. ET. 

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