Taking to their official Instagram page, the duo shared a picture with a message that read: "To all of our amazing supporters, we announce earlier this year that we would release our 4th studio album in 2017, but due to personal circumstances out of our control, we have made the decision to hold releases until 2018."
"Thank you for your ongoing love. See you next year xx," they continued.
Fans took to their post to share kind words. "Personal life always comes first and I hope you’re doing ok girls. Take care of yourself and take your time. I love you endlessy ❤️," one wrote.
While another commented: "Take care of yourself. I'm very excited but good things take time so don't rush. ❤ Can't wait for 2018. Something great to look forward to next year. ✨🌷,"
The girls have had a busy year of recording, but they've also had some quality personal time as they did rush home to support their mother when she was unwell earlier this year.
Sending them love and light during this time.