Rihanna has joined a number of celebrities urging their followers to register to vote in the US, BBC reports.
It comes after Taylor Swift broke her political silence and joined Chance the Rapper and John Legend by campaigning.
The registration period has or is about to run out in a number of states ahead of the November mid-terms.
Rihanna wrote to her 65 million followers, "Good Morning America. Who is awake this morning? And who's woke?"