"My epic niece, Kellise did such an amazing job @ her school play today," she captioned the image of herself donning oversized sunglasses and a hood inside a theater, likely wanting to leave the spotlight solely on her niece.
Minaj herself has dipped her toe in the acting pool with roles in films like Barbershop: The Next Cut and The Other Woman.
See photos of Nicki Minaj through the years:
Nicki Minaj disguises herself to see niece in high school play -- see the pic!
LAS VEGAS, NV - MAY 17: Recording artist Nicki Minaj performs during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Recording artist Nicki Minaj performs onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
LAS VEGAS, NV - SEPTEMBER 19: Recording artist Nicki Minaj performs during the 2014 iHeartRadio Music Festival at the MGM Grand Garden Arena on September 19, 2014 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images for iHeartMedia)
Recording artist Nicki Minaj poses in the press room during the MTV Video Music Awards (VMA), August 24, 2014 at the Nokia Theatre in downtown Los Angeles. AFP PHOTO / Frederic J. Brown (Photo credit should read FERDERIC J. BROWN/AFP/Getty Images)
LOS ANGELES, CA - JUNE 29: Singer/rapper Nicki Minaj accepts Best Female Hip-Hop Artist onstage during the BET AWARDS '14 at Nokia Theatre L.A. LIVE on June 29, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images for BET)
WESTWOOD, CA - APRIL 21: (EDITORS NOTE: This image was processed using digital filters.) Singer Nicki Minaj attends the premiere of Twentieth Century Fox's 'The Other Woman' at Regency Village Theatre on April 21, 2014 in Westwood, California. (Photo by Jason Kempin/Getty Images)