Sunday's finale of the docu-series will also feature the backup dancer getting an unexpected promotion.
Mimi admits to being unsure about her future with the Australian billionaire.
The would-be couple also ate space cakes in Amsterdam!
Plus, six more can't-miss moments -- crowns! weed brownies! homoeroticism! -- from the latest episode of the diva's docu-series.
The actress' new Tina Fey-produced NBC series premieres on Apr. 25.
ET caught up with the star at NBC's Television Critics Association press event on Wednesday.
The new couple attended a wedding together in London, England on Sunday.
The pair were spotted out in London together!
He also opened up about the upcoming birth of his baby boy.
Plus, Mimi's most epic shade ever??
On Sunday's episode of 'Mariah's World,' James Packer flies to Paris to see Mariah Carey perform -- and Bryan Tanaka doesn't like it.
Cannon shares his thoughts on Carey's NYE flub on Monday's episode of 'The Ellen DeGeneres Show.'
The backup dancer watched the singer try on her bedazzled gown in a new promo clip for 'Mariah's World,' which airs Sundays on E!.
Mimi and her 5-year-old daughter, Monroe, sparkle in matching pink gowns.
