Jessica Alba debuts huge rose tattoo on arm - is it real?

Jessica Alba debuted a large rose tattoo sleeve on her arm this week, leading fans to wonder whether it's real.

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Alba posted pictures on the photo-sharing application instagr.am, which barely revealed the new black and white ink that was notably missing from photos the week before on March 21. Alba did not answer fan's questions about the tattoo on the website.

The 30-year-old mother of two is no stranger to tattoos, having a bow on her lower back, Sanskrit script meaning lotus flower on her right wrist and a ladybug and daisy tattoo on the back of her neck, which the actress has since had removed.

Alba's rep told Us Weekly that the tattoo, which features three roses, is a temporary tattoo for the film.

Alba recently returned home from filming "A.C.O.D." in Atlanta, Georgia. The comedy also stars Adam Scott, Mary Elizabeth Winstead, Jane Lynch and Amy Poehler.

"A local tattoo artist in Atlanta did it on her," a source told Us Weekly. "Jessica thinks it's pretty tough."

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