For teen-agers who don’t have the hundreds of dollars it can cost to celebrate a prom in style, Operation PROM is back.

The organizers collect donations and new or gently worn prom dresses to distribute to students throughout Westchester County. Boys will be able to arrange for free tuxedo rentals.

The non-profit organization was founded by former Yonkers students Noel D’Allacco five years ago to make sure money never got in the way of this rite of passage. This year, Operation PROM  has paired up with Westchester County’s Department of Social Services.

It helps hundreds of teens who live in shelters, group homes or very low-income households and last year, it collected 500 dresses. It also has expanded to provide regular donations of food, clothing and school supplies to homeless students and leadership scholarships to high school seniors.

To request a free prom dress or tuxedo, students must be passing all of their classes, be recommended by their guidance counselor and meet financial need requirements.

To donate, here’s a list of drop-off locations:

Palazollo Plaza
800 Central Park Ave., Scarsdale
Suite 201 – Monday to Friday 10 a.m. to 4 p.m.

The College of Westchester
325 Central Park Ave., White Plains
Saturdays only – 9 a.m. to noon

Life Cleaners
300 Nepperhan Ave., Yonkers
Monday, Tuesday, Thursday and Friday – 7:15 a.m. to 6 p.m.
Wednesday 7:15 a.m. to 7 p.m. and Saturday – 7:30 a.m. to 4 p.m.

Life Cleaners
34 Cedar St., Dobbs Ferry
Monday, Tuesday, Thursday, Friday – 6 a.m. to 5:45 p.m. and Saturday. – 7 a.m. – 4:45 p.m.

For more information: www.helpprom.org.

Or contact Linda Sala at Department of Social Services at (914) 995-5027.

PHOTO: Noel D’Allacco, founder of Operation Prom, displays one of the donated dresses in a May 12 photograph. ( Matthew Brown / The Journal News )