John Nimmo and Isabella Sorley pleaded guilty to sending "menacing" tweets to a feminist campaigner following her successful campaign to ensure a woman features on British banknotes.
Nimmo, 25, and Sorley, 23, admitted a charge of sending the messages in July last year to Caroline Criado-Perez.
The pair sent the tweets after Bank of England Governor Mark Carney revealed that Pride and Prejudice author Jane Austen would replace Charles Darwin as the face of the £10 note.
The announcement was hailed as a "brilliant day for women" by Ms Criado-Perez.
More top news
Katy Perry performed her new single surrounded by two giant skeletons seemingly modeled on Donald Trump and Theresa May.
The Brits saw two awards handed to the late David Bowie and tributes to George Michael. Here is a full list of the winners.
Regularly getting in more than nine hours in bed could be an early warning sign of the disease, say scientists.