Rihanna's still not ready for release of new album 'Anti'

Rihanna had teased fans with the December release of her album Anti, but the singer is still choosing songs for her eighth album.

Australian musician Sia, who co-wrote the 27-year-old 'Umbrella' hitmaker's 2012 album Diamond, said Rihanna recently turned up to her to listen to the songs she had worked on, reported Entertainment Weekly.

"The other night she came over and listened to half of 25 songs I played her because she's still looking for songs for her new album. She was there to listen to songs and see if there was anything that she was into. It was a business meeting for sure. She took four (songs) but I don't know if they'll end up (on the album)," Sia said.

Rihanna had shared Anti's artwork in October.