The singer, who sent the tweets just hours before the highly anticipated release of her album Thank U, Next, is up for two awards this year: best pop solo performance for God Is a Woman, and best pop vocal album for Sweetener.
Monae's "Dirty Computer" is one of five albums by women nominated for the top prize at Sunday's show.
Sunday's show will include performances by Diana Ross, Miley Cyrus, Post Malone, Dolly Parton, Janelle Monae, Shawn Mendes, Katy Perry, Ricky Martin and Red Hot Chili Peppers.
Six of the best new artist nominees are women, including H.E.R., Chloe x Halle, Margo Price, Dua Lipa, Bebe Rexha and Jorja Smith.
Brandi Carlile and Kacey Musgraves swept the boards in their respective genre categories, Americana and Country, making the ones to beat in the night's main category - album of the year. Other big stars also declined to attend, including Kendrick Lamar, the top nominee with eight, and Drake, nominated for seven awards.
Ariana Grande also won her first Grammy in the same week that she publicly blasted Grammys producer Ken Ehrlich and accused him of lying about why she was no longer performing at the show. "I am such a misfit", said Carlile, flanked by the twins while accepting their second award during the Premiere Ceremony, which was livestreamed at Grammy.com. "I feel like we are truly part of a celebration, bringing the light, bringing the energy and continuing to make the statement that music is such an important part of all of our lives", she said in a press preview on February 7, according to Rolling Stone.
"I've got nothing to say, I'm speechless", she said. He later acknowledged that it was a "poor choice of words", and it forced the academy to launch a new task force focused on inclusion and diversity.
When she returned onstage for her second win, she was in shock. Taylor Swift, who was snubbed and one scored one nomination, also won't be at the show.
We couldn't be more excited to see what the 15-time Grammy victor does with this year's show - and we know she's pretty psyched about it too!
The ceremony starts at 5 p.m. PT/8 p.m. ET and will air on CBS.
The live ceremony in Los Angeles could see Cardi B take home her first ever Grammy and potentially become the first rapper since 2004 to win the coveted album of the year award for her "Invasion of Privacy". There will also be a tribute to the late Aretha Franklin, who died last August.