Shontelle has claimed that Christina Aguilera "lost her mojo" on her latest album.
The 'Impossible' singer said that Aguilera's latest LP Bionic was not her greatest effort, but insisted that most artists will eventually experience an album that "didn't work".
"I feel like Christina lost her mojo," she told That Grape Juice.
"But every artist goes through that. Everyone has that album that just didn't work, like, everyone."
Asked if she had heard Aguilera and Britney Spears's latest records, she said: "I didn't even listen to [Bionic] (OIC) but I've been a fan of Britney's new stuff."
Shontelle also revealed that she will feature on Rihanna's upcoming album Loud.
She said: "I'm so excited because... we've finally been in the studio together working on some stuff that's going to be on her next up and coming album Loud."
Asked if she featured as a co-writer or in a duet, she teased: "Stay tuned for further details!"