The 19-year-old former Disney star put on a big yellow wig to go with her leopard-print tight jumpsuit. She hid her short hair under a big yellow wig and wore a vibrant eye makeup.
The 'Hannah Montana' star completed her look with arm tattoo and a butt pad to imitate Minaj's body structure, reported Ace Showbiz.
Cyrus posted the picture with a friend in a party at her own house.
"@nickiminaj you a stupid hoe (sic)," she posted, referring to one of the rapper's hit singles.
Minaj replied saying, "I think I am probably gonna go as Miley Cyrus because she's going as me. I just saw that on Twitter that she's doing me. Maybe I should get the short buzz cut like Miley. I feel like doing it."
Cyrus is not the only public figure dressing up as other celebrities. In another party, Sum 41's Deryck Whibley and his girlfriend posed as Avril Lavigne and her fiance Chad Kroeger respectively.
Elsewhere, 'Glee' actor Chord Overstreet channeled his inner Brad Pitt. Meanwhile, the host of the bash Matthew Morrison went as Justin Timberlake and his girlfriend dressed up as Britney Spears.
