The Most Charming Creative Agency in the World

A boutique agency

Sister is a boutique agency that works for both national and international brands. We take on the whole process of concept, design and execution.

Our team consists of a loyal network of senior creatives with knowledge and experience in different disciplines. For each project we gather a unique team that best suits the customer's demand and identity. We merge creative disciplines and match your ambitions. This is how we can deliver custom made quality, keep communication lines short and the costs low.

for charming brands

Sister was founded in 2007 by a team of women. We understood female target audiences and we felt we had to respond better to their needs. We discovered that women respond best to the following core values: humanity, warmth and really being there for your customer. This is where our philosophy of charm marketing originated from. We believe in the power of feminine values that connect and create a lasting, meaningful relationship. For anyone who is looking for a positive and charming impact for their brand that contributes to a better world.

Meet the Sisters

The name Sister says it all: someone whom you can always count on, who connects naturally and relates without judgement. Communication is in our nature. We know how to listen, talk and empathise. We love creative advertising, and we will never put our egos before your cause.

We consciously select our customers and creatives. We work for and with everyone who shares our values so that we can continue to do our work with enthusiasm and commitment.


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Owner/Creative Director

Valentine Kreykamp

Walks her talk with a creative and (pretty) sustainable

After more than two hectic decades working in TV and advertising, Valentine realised she needed a more conscious way of living. She changed her lifestyle to healthy, set her mind to meditation, her diet to vegan, and started to teach yoga classes alongside her creative work. Ever curious and adaptive to the changing world, she’s ready to wield her creative experience to make a difference.

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Marianne van Leeuwen

A lover of tech who harnesses the power of data to uncover marketing gold. 

Marianne’s is continuously working on technology designed to improve the marketing profession. A true data cruncher, data driven marketing is her latest love.

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Copywriter (NL)

Ilona van Laarschot

Committed to creating for optimistic brands and innovative thinkers  

Ilona creates ideas that matter. She writes moving brand statements and develops stories you want to share. After work, she loves nothing more than to be Wi-Fi Free.

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Art direction

Helen Buijs

Flying the flag for fresh concepts, clean designs and a clean earth

Helen makes brands beam with confidence and creates logos that shine with character. She doesn’t stop until her campaigns have that flair that everyone is after. She loves brands who have good intentions.

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Copywriter (NL)

Anneke van de Watering

The writer who knows what it takes: Stay curious.
Stay inspired

Like many copywriters, Anneke loves to strategise. From politics to food, she has an opinion about most things. Her empathy, flexibility and 'je ne sais quoi' ensure that everyone goes home happy.


Digital designer

Marieke Kuijl

Making an impact with a strong maxim: Be Bold or Italic. Never Regular

Marieke is a first-generation Digital Designer. Her designs are intuitive and precise. She balances the bold with a feminine touch, and her love of details shines through in every pixel-perfect creation. Marieke also throws the wheel, creating handmade ceramics to stay grounded. Namaste.

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allround designer

Ingeborg Huisman

 ‘Simplicity rules’ for the lady who always keeps the idea alive

Whether it’s on- or offline, Ingeborg is quick to find solutions to problems. From ads to art work. From image retouching to DTP. Her motto is simple: keep the idea alive.


Copywriter (UK)

Lucy Crystal




Would you like to join us?

If you're interested to add your charm, please send your
resume and motivation to

Communication is in our nature.
We know how to listen, when to talk and how to involve.
And we will never put our egos before your cause.