Britney Spears Credit: Britney Spears/Facebook

Her best costume yet?

Britney Spears shared a stunning photo of herself Thursday all dressed up as the Queen of the Nile.

The 30-year-old "I Wanna Go" singer wrote on Facebook, "Channeling my inner Cleopatra today at Elizabeth Arden Fantasy Twist shoot. Fragrance is out in Sept. 1st look on Path."

In the photo, Spears strikes a pose in her Cleopatra-inspired all-gold ensemble -- complete with heavy eye makeup and a large headpiece. The star also showed off her flawless bod in the tight-sexy dress, which featured a sheer skirt.

Spears is currently acting as a judge on The X Factor with Simon Cowell, L.A. Reid and Demi Lovato.

Lovato, 19, and Spears have become partners in crime on the show. "Britney and Demi are getting along great," an insider told Us Weekly in June. "Whenever they aren't filming, Demi and Britney are chatting and hanging out. . . They are seriously bonding big time. It's nice to see."

Tell Us: How do you think Britney Spears looks as Cleopatra?