Gwen Stefani is no doubt considered to be one of the most beautiful women in the world, but it looks like even she gets jealous from time to time, too. In fact, there's a new report that indicates the chart topper might be feeling threatened over Miley Cyrus and her very close friendship with her boyfriend, Blake Shelton.

According to Celebrity Dirty Laundry on Tuesday, Gwen is none too happy over the fact that Miley will be appearing on her reality television show, The Voice as a coach next season. There's a rumor behind the scenes that says Miley simply can't stand Gwen's co-star Adam Levine but she does have a connection with Blake.

Blogger Amanda Austin points out, "Miley is basically just a younger and more relevant version of Gwen—the two women have similar styles. We aren't the only ones who have compared Miley to a younger and hotter version of Gwen Stefani—and Gwen is reportedly starting to worry that Blake might feel the same way."

So far Gwen herself hasn't made any comments about the rumors, and neither has Miley. While it's certain that Miley and Blake will make for good onscreen entertainment, it's highly unlikely that the duo will end up getting romantic with each other off-screen. Gwen and Blake have declared their love for each other over and over again with their constant PDA and on-camera flirtation.

The couple began dating right after Blake announced his divorce from ex-wife Miranda Lambert. At the same time, Gwen separated from her husband of ten years, Gavin Rossdale. They share custody of their three children, Kingston, Zuma, and Apollo together.

Keep up with Enstars for all the latest news on Gwen Stefani, Blake Shelton and all of your favorite celebrity couples right here.

Tags: Gwen Stefani Miley Cyrus Blake Shelton