Reality TV star Snooki has joked that her unborn baby daughter is "already applying lipstick" on a sonogram picture.

The reality TV star, real name Nicole Polizzi, shared a sonogram picture of her second child in the womb with her followers. The image shows the unborn child's hand close to her mouth, reports contactmusic.com.

"My baby girl! She's healthy and look, she's already applying lipstick #mygirl (sic),` she tweeted.

The former `Jersey Shore` star's daughter will be her second child with fiance Jionni LaValle. They have a 20-month-old son, Lorenzo.