Belly Dance Maternity
Get $30 tops and $40 dresses from brands like NOM, Chaiken and Japanese Weekend.
When: Sat. 9/13, 9am-4pm; Cash Only.
Where: 548 Hudson St., bet. Charles & Perry, 212-645-3640.

Flying Squirrel
The end of summer brings 50 to 75-percent off Cabana Life, Vincent Shoes, See Kai Run and other goodies.
When: Sat. & Sun., 9/6 & 9/7.
Where: 96 North 6th St., Brooklyn, 718-212-7775, flyingsquirrelbaby.com.

giggle
Get up to 75-percent off clothing, artwork and toys from brands like Zid Zid, Tea Collection and JJ Cole.
When: Through 9/15.
Where: 120 Wooster St. and 1033 Lexington Ave., giggle.com.

Kidini
Enjoy great buys on 3,000 pieces of women’s and children’s fall and winter pieces, from down jackets to winter skirts.
When: Wed. 9/17-Fri. 9/19, 9:30am-6:45pm.
Where: Nancy Ney Studio, 620 Broadway (bet. Bleeker & Houston), Suite 2R, 917-653-3643.

Lulu DK
Baby bedding, including pillows, crib skirts, quilts, sheets and bumpers, range from $39 to $152.
When: Tues. 9/16 - Fri. 9/19, 10am-5pm.
Where: 675 Madison, 4th floor, 212-223-4234.

Hear
Great Jazz on the Great Hill
Join a family dance workshop, then picnic during an afternoon of live music at Central Park.
When: Sat. 9/6, 1-5pm; All ages; Free.
Where: Peter Jay Sharp Children’s Glade and Great Hill, enter at West 106th St., 212-860-1370, centralparknyc.org.

Uncle Rock
Jam to hip indie music for kids at Bowery Poetry Club.
When: Sun. 9/7, 12pm; All ages; $10.
Where: 308 Bowery, unclerock.com.

See
Charlotte’s Web
Stop by for dinner as the Moxie Spot kicks off its free family film night with the original version.
When: Fri. 9/5, 6:15pm.
Where: 81-83 Atlantic Ave. (at Hicks St.), Brooklyn, 718-923-9710, themoxiespot.com.

Do
Make Music with Bonga
A rhythm workshop helps kids find the beat, with percussion instruments like handmade drums and wood blocks.
When: Sat. 9/6, 11:30am; All ages; $18 (reservations required).
Where: Gumbo, 493 Atlantic Ave. (bet. Nevins & Third), Brooklyn, 718-855-7808.

Go
14th Street Y Open House
Head to the rooftop for an end-of-summer playground and carnival.
When: Sun. 9/7, 10am-2pm; All ages; Free.
Where: 344 East 14th St., 212-780-0800, 14streety.org.

Shop
giggle
Get up to 75-percent off clothing, artwork and toys from brands like Zid Zid, Tea Collection and JJ Cole.
When: Through 9/15.
Where: 120 Wooster St. and 1033 Lexington Ave., giggle.com.

Tomorrow, miniMasters is opening its doors for a day of free trial kiddie classes. Sign up for a slot and test the waters at story time, art appreciation or mommy-and-me yoga. The Tribeca members-only center caters to the whole fam (think manis and Pilates), so you may want to stay awhile. Classes range from 6 months to 5 years, so check the schedule to see what fits your little ones.

And see what they master best.

When: Thurs. 9/4, 9:30am-5pm; Free (RSVP required).
Where: miniMasters, 100 Reade St., 212-374-1747, minimasters.com.

PB & Caviar, a new Tribeca boutique, excels in high-end women’s and children’s frocks, organic beauty booty and covetable decor. Founder Evin Cosby (yes, as in that Cosby) created a homey space that combines fashion with family friendliness. Kids will appreciate the handmade (non-toxic, fair-trade) toys from Kenya and Germany, while moms can label hunt among Serfontaine, Antik Batik and Anna Sui.

Make yourself at home.

Open Tues.-Sun. 11am-7pm. 88 Thomas St. (bet. West Broadway & Hudson), 212-608-1112, pbcaviar.com.

On Labor Day, head to Fort Greene for a Back to School Bash hosted by the Brooklyn Public Library and Habana Outpost. The lineup includes a DJ, face painting, eco-friendly crafts, readings and a kiddie dance party. And since the event is to encourage literacy, make sure your family signs up for a library card to kick off the school year.

Not to exclude adults, there will also be frozen drinks and Cuban snacks. Parade-goers will be hard pressed to find anything better.

When: Mon. 9/1, 12-5pm; All ages; Free.
Where: Habana Outpost, 757 Fulton St. (at South Portland Ave.), Brooklyn, 718-858-9500.

See
Charlie Hits It Big
Author Deborah Blumenthal reads from her children’s book about a guinea pig who dreams of the big time.
When: Thurs. 8/28, 3:30pm; All ages; Free.
Where: Borders, 576 2nd Ave. (at 32nd St.), borders.com.

Go
Kiddie Kabuki
Actor Bando Hirohichiro performs story of a young merchant who takes a daring voyage through a storm to fetch oranges needed for the New Year’s Celebration. Afterwards, try hands-on dance lessons.
When: Sat. 8/30, 2-3:30pm; Ages 2-12; $12 Adults, $6 Kids (advance purchase required).
Where: NYCNDA, 107 Suffolk St. (bet. Delancy & Rivington), 2nd floor, 646-334-7426, nycnda.com.

Do
Capoeira in the Park
See DanceBrasil perform the lively Afro-Brazilian dance/martial art form, then enjoy a family dance workshop to learn the basics.
When: Sun. 8/31, 1pm-3pm; All ages; Free.
Where: Great Hill, Central Park (enter at West 106th St.), 212-860-1370, centralparknyc.org.

Shop
Books of Wonder
Get up to 50-percent off kids’ hand-picked titles.
When: Thurs.-Sun., 8/28-9/2.
Where: 18 West 18th St., 212-989-3270, booksofwonder.com.

Children’s Aid Society Common Cents
Make a difference in the life of an underserved NYC child and his or her family by organizing a “Penny Harvest” — at your office, in your apartment building — where Pre-K through 8th grade students collect change, turn it into dollars and make decisions about how to improve their own communities.

826NYC
Become a one-on-one tutor and help a child with his or her creative and expository writing skills, storytelling abilities, filmmaking and more. Volunteers with editorial or copyediting backgrounds, as well as IT and design skills, are currently needed for weekday mornings and afternoons.

I Have a Dream
Work as a mentor, tutor, fund raiser or special events coordinator for this organization which helps at-risk kids reach their academic and career potentials.

Kids for Community
This community-based organization seeks volunteers according to age (from 5 years and under to 18), geographic area they’d like to serve and by their own interests. Volunteering opportunities exist in such as areas as Food & Hunger, Education & Literacy, Arts & Culture, Anti-Violence and more.

Learning Leaders
Work with NYC public school students, ages pre-K through high school, in reading, English as a second language, math and other subjects. Share your love of books or your financial acumen as a student plans for college and financial aid.

Make A Wish
Volunteers ages 14 to 84 are needed to help fulfill the wishes of kids with life-threatening medical conditions. You can help by being a Wish-Granting Volunteer (working directly with children), a Phone Greeter (by helping families who are visiting NYC), or a Student Intern (ages 14-18 only).

NY Foundling
Work with this non-profit social service agency to help both children and entire families. Volunteers must be at least 17 years old and there is a commitment of 2 hours per week for one year. Lend your creative talents, become a mentor, teach computer skills, show a child how to do yard work and much more.

NY Youth at Risk
Transform the chaotic life of a disadvantaged young person through consistent mentoring. You’ll help kids avoid gangs and violence and watch their school attendance rates and positive sense of family increase dramatically. Work as recruiter, part of the Production Team or pitch in on fundraising efforts.

Only Make Believe
Help make the lives of kids living with chronic illnesses a bit brighter through the magical world of theatre. Help with an OMB party at a designated hospital and put your festive skills to good use: play games, serve refreshments, provide goody bags, sew costumes or build props.

Simply put: Just do it.

Dimples Baby popped up among a strip of stores on Avenue U, with a neighborhood-appropriate selection of gear, diaper bags and toys from Netto Collection, Orbit Baby, Jeeto and Boon. Founded by two moms (and what isn’t these days?) the boutique has a special area dedicated to play, with plasma TV and imported toys to occupy the kids while you browse.

Good thing you’ll be staying in town more often.

Open Mon.-Thurs. 10:30am-5:30pm, Fri. 10:30am-1:30pm, Sun. by appointment (closed Sat.). 361 Avenue U, Brooklyn, 718-449-2229, dimplesbaby.com.

Stork, a custom baby planning service, is giving the inside scoop in a series of free seminars. Get the 411 on baby gear must-haves, how to hire a nany and the basics of going green. Instead of trial and error or taking advice from friends (who don’t even have kids!) let the experts do the talking.

The first session is tonight: Talk about immediate gratification.

When: Mon. 8/25, 7:30pm; Tues. 8/26, 1pm; Mon. 9/22, 7:30pm. Free; RSVP at 212-353-1947 or info@maternalfitness.com.
Where: Spabebe, 108 East 16th St., 4th floor, storkplan.com.

The annual Arthur Ashe Kids’ Day opens the U.S. Open tomorrow. Hop a subway to Queens, and hit up the free festival on the grounds where the Open takes place. Catch demos by the biggest names on the court, try new techniques at clinics, test your skill in games, and enjoy standard summer-festival fare like face-painting and hair-braiding (a sure favorite among future Venuses and Serenas). Stars of their caliber are even known to hold court during Kids’ Day, signing autographs and posing for photos.

Later in the afternoon, stick around to watch pros practice, or head inside to catch the giant, televised stadium show. This year’s lineup features tween favorites like Demi Lovato and Menudo (yes, they still exist); it’ll sell out fast, so buy tickets in advance at ticketmaster.com. And the big names in the tennis game will make appearances.

Better bust out your cutest tennis outfit.

When: Sat., 8/23, 9:30am-4pm (activities until 1pm); $10-$20 General Admission, Activities free.
Where: USTA Billie Jean King National Tennis Center Grounds, Flushing Meadows, Queens, usopen.org.