Juan Sharma/PacificCoastNews.com

Jessica Simpson has already demonstrated a penchant for unusual baby names with a special meaning.

Now, Us Weekly is reporting that the "Fashion Star" mentor may have already picked out a name for her second baby she's expecting with fiance Eric Johnson.

"[She's] told people she's going to name the baby Ace!" a source was quoted telling the magazine.

Simpson, 32, is already mom to 10-month-old daughter, Maxwell Drew.

Prior to Maxwell's birth, Simpson revealed that she had chosen a name that was a tribute to her family and her fiance's.

PHOTOS: Jessica Simpson Through the Years

"It's nothing shocking and nothing you'll have to add to the dictionary," Simpson told Elle last year prior to her daughter's birth. "Still, when people hear it they'll know …why."

Maxwell is Johnson's middle name and his grandmother's surname. Drew is the maiden name of Simpson's mother Tina.

If Ace is indeed the name Simpson is considering for her second baby, she has yet to explain why.

The pop star and her former NFL player fiance confirmed their second pregnancy on Twitter Christmas Day.

See How Simpson Announced Second Pregnancy