Halloween happens all week long in NYC which is why I put this handy little guide together for you of the best Halloween parties going on in the city that never sleeps. NOTE: this is strictly a Halloween list, visit our full NYC Nightlife calendar for more happenings.

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Monday:

Animal Fair Halloween Pet Costume Party At Mansion: Monday, the 27th.Benefiting the Humane Society of NYC. Celebrity guest judges include Beth Ostrosky, Jill Zarin and Jeanine Pirro. Tickets are $50 and can be purchased by calling 212-752-4842 or emailing yappy [at] animalfair.com. (ALERT the Nonsociety girls!!!)

Tuesday:

The Central Park Conservatory's 13th Annual Halloween Ball: At the Bandshell in Central Park. Cocktails are at 7:00 with dinner and desert following. This is one of THE Halloween parties to be at for the social elite set. There is a costume contest with prizes courtesy of Chanel. Black Tie, Masks, and costumes encouraged.

Halloween Murder Mystery Party: At Gallery Bar. (120 Orchard) There will be live music, dancing, DJs, cabaret, costumes,etc. The most exciting part: there will be a live MUSIC VIDEO SHOOT on site!

Wednesday:

Jeremy Scott is hosting a party with the MisShapes at Cain.

Thursday:

RADAR Magazine's Vampires & Victims: As stated on Friday, when we heard of the unfortunate collapse of the Magazine, this will be one heck of a party if it really happens. It's set to happen at the newest hotspot "Citrine" and features DJ Jedi.

Lydia Hearst's Masquerade Ball: Secret Venue. Artwing, MAC, Interview, SKYY Vodka, and Alex and Ani Present are helping host this VIP party of which you can look forward to hearing about later next week.

Costume Party with Nick Cannon and Mariah Carey: At Marqee

Friday, October 31st:

Below are the parties we will be keeping our eyes on on the actual Halloween. We have received the following invites and will do our best to cover them all! For information about all of them visit our Calendar.

Halloween At Rose Bar

Amy Sacco's Halloween at Bungalow 8

Heidi Klum's Party at 1Oak

Southside Halloween Party Hosted by Nicole Trunfio and Alexandra Richards

Halloween at Cain

Halloween at Marquee

Saw V Halloween Party at Bijoux

Halloween In Wonderland at Hudson Bar (With DJ Nick Cohen)

Halloween at Johnny Utah's

Tavern on the Haunted Green

Halloween at Lucky Strike Lanes

Halloween Slasher

Haunted Hostel at The Cabanas

Halloween Parade after party at Webster Hall

Sophia Hesketh's Halloween Cocktail Party

Sheik'N'Bake's party featureing DJ Julio Santo Domingo at the Kim Lounge in the E.Village

Heroes and Villian's night at Milk Studios (By Mazdack Rassi, Ben Pundole, and Ben Watts)

A Bloody Halloween at Bagatelle

Please let us know if we missed your party!