*Rihanna’s “Last Girl on Earth Tour” will have one less girl, as Lil Wayne’s protégé Nicki Minaj announced Wednesday she is pulling out of the trek.

“Barbz I’m sorry 2 say I will not be going out on RiRi’s tour. I’ve decided 2 use that time 4 the completion of my album. Hope u understand,” Minaj tweeted on April 7.

About 19 hours before that message, she posted another tweet that seemed to allude to the forthcoming announcement, stating, “*sighs* how…how do i say this…hope the barbz will understand…hate letting them down. *sighs again while in deep thought*”

Minaj’s announcement comes just two days after Rihanna announced her as an opening act alongside Ke$ha.

No reports yet on whether or not there will be a replacement for the rapper on the 25-date tour.