Older Sister Events

Ratings include Zola and Google reviews

Service levels: Full-service planning

Team size: 2 – 3


About Older Sister Events

Older Sister Events LLC

Owner & Lead Planner

Older Sister Events is a day-of wedding coordination business serving New York City, Westchester County, and the Hudson Valley. Founded by Katie Sullivan, we handle timelines, vendor management, and the thousand small things that come up on a wedding day — so you can actually be present for it. Services include wedding day coordination, wedding weekend coordination, bachelorette party coordination, and bridal shower coordination. Beautiful events. Thoughtful logistics. Consider it handled.

I am type A so whether you are type A and need to hand over the reins for execution or type B and need someone to keep the planning on its tracks, I am the 'older sister' everyone needs! As a professional executive assistant and a lifetime older sister, I bring both my professional and caring sides to every event.

In three words: Confident, Organized, Resourceful


Services by planning level

Service included in starting price
Service available for an extra cost
Full-service planningPartial planningElopement / microweddingDay-of coordination / wedding management
Planning begins3 Months out3 Months out
Venue Recommendations
Transportation Coordination
Final Venue Walkthrough
Timeline Creation & Management
Onsite Event Management
Vendor Management
Contract Review
Wedding Favors & Accessories
Venue Visits
Event Styling & Design
Vendor Selection
Invites & Stationery
Wedding Website
Rentals & Linens
RSVP Tracking
Accommodation Coordination
PricingStarts at $15,000*Starts at $8,000Starts at $4,000Starts at $3,500

Reviews

Write a review
Rating: 5.0

5.0 out of 5

3 reviews

  • DA

    Danielle A.

    Rating: 5
    Zola
    Aug 17, 2026

    Hire her immediately!

    Katie is a lifesaver. As someone who has a Type A personality, I never thought I needed a wedding planner until I met Katie. She stays cool under pressure and executes flawlessly. On my wedding day, my wedding dress had a complicated zipper and bustle that left my mom and sister completely stumped (despite them both attending my dress fittings and try-ons and plenty of practice). Right as stress levels spiked, Katie stepped in, handled it effortlessly, and essentially saved the day as we were slowly becoming behind schedule. Fortunately, she kept us on time and we arrived to the church ceremony without issues! She goes above and beyond ways you won’t even realize, especially on the wedding day. When our venue’s maitre d’ was too busy to distribute vendor payments and tips during the reception, Katie took over and ensured everyone single vendor was paid on time and properly. Having her there meant I could completely relax and enjoy my night as a bride. She is worth her weight in gold and worth every penny!!!

  • LV

    Laura Vidler

    Rating: 5
    Google
    Aug 17, 2026

    Katie planned my bachelorette weekend and it was one of the best parts of my entire wedding process! A house for 15+ people, private chef dinner, and full day winery tour with party bus went off without a hitch. She brings a high level of professionalism and is extremely thorough and communicative. She’ll think of things you need before you do! Logistics aside, she brings a fun and positive energy wherever she goes and will always have your best interests in mind. I’ve known Katie for a very long time and any plan is handled when she’s involved. Believe me, she is the one you want working on your event no matter how big or small!!

  • DA

    Danielle Albert

    Rating: 5
    Google
    Aug 17, 2026

    Katie is a lifesaver. As someone who has a Type A personality, I never thought I needed a wedding planner until I met Katie. She stays cool under pressure and executes flawlessly. On my wedding day, my wedding dress had a complicated zipper and bustle that left my mom and sister completely stumped (despite them both attending my dress fittings and try-ons and plenty of practice). Right as stress levels spiked, Katie stepped in, handled it effortlessly, and essentially saved the day as we were slowly becoming behind schedule. Fortunately, she kept us on time and we arrived to the church ceremony without issues! She goes above and beyond ways you won’t even realize, especially on the wedding day. When our venue’s maitre d’ was too busy to distribute vendor payments and tips during the reception, Katie took over and ensured everyone single vendor was paid on time and properly. Having her there meant I could completely relax and enjoy my night as a bride. She is worth her weight in gold and worth every penny!!!