Victoria’s Secret, known for sexy lingerie, has unveiled a new line of sizzling Halloween costumes on its web site, modeled by some of the angels who show off is underwear. While the costumes are good fun for adults, do they send tweens the wrong message?

Halloween is supposed to be a kid’s holiday, but adults have increasingly gotten into the act, in many cases with racy outfits.

Many women feel it’s the one time of year, when they can let down their hair and play out sexual fantasies without repercussions, according to experts.

But some parents are in an uproar because some sexy costumes are now available in children’s sizes, raising a question whether young girls are being over-sexualized.

Check out the costumes! Click to enlarge.

The VS lingerie collection, which is called “Sexy Little Fantasies,” looks stunning on the super-fit Victoria’s Secret models.

With prices ranging from $68 to $198, the 10 “costumes” are obviously meant for adults.

But do costumes provocatively named “Sexy Little Air Hostess,” a “Sexy Little Senorita” or a “Sexy Little Sailor” also send a message to children?

Parents were in an uproar when Bratz dolls were introduced. The 10-inch “girls with a passion for fashion” skyrocketed popularity among young girls.

Child development experts, however, saw the Bratz as the cutting edge of a worrisome trend: the increasing use of sexual imagery in products marketed to young children.

Bev Ehlen, the St. Louis-based area director of Concerned Women for America, a faith-based group, told the local Missourian newspaper “it’s more evidence of the sexualization of our children and society.”

“When women let down their standards, it’s the last step of the breakdown of morals of society,” she added.

Meanwhile, the 2010 Victoria’s Secret Fashion Show will air live from New York City on Nov. 30.

While supermodel Heidi Klum won’t be walking the runways this year after having retired from VS at the age of 37, Brazilian stunner Adriana Lima, 29, will sport a $2.4 million bra encrusted with 2,000 diamonds, giving new meaning to the phrase “You look like a million bucks,” the company said.