You may have seen hints on my Instagram and in past blog posts, but the time has finally come to reveal my Halloween costume for this year. And it is…drumroll…

Lauren Conrad's DIY Mermaid Halloween Costume {easy to make and so cute}
…a mermaid!

Thank you to all who voted to help me choose! Mermaid just narrowly beat out Ringleader by two percent in our poll. Even though I had already bought Chloe her lion costume, I’m glad Mermaid won because my DIY costume turned out pretty flippin’ cute (pun intended). Here’s a step-by-step guide to how I created this year’s costume…

DIY Mermaid Costume

Here’s what you will need:

  • two large scallop seashells
  • your choice of mixed seashells (my favorite were tiny starfish!)
  • corset or strapless bra
  • shimmery green fabric with some stretch
  • dark green or turquoise sequined fabric
  • tulle in different shades of turquoise and blue
  • needle and thread
  • straight pins
  • scissors
  • hot glue gun
  • a dress form (or in my case, a cute intern!)

 

Instructions:

For the seashell bra:

  1. Lay the bra on a flat surface and arrange the seashells to your liking.

Lauren Conrad's DIY Mermaid Halloween Costume {easy to make and so cute}

  1. Use your hot glue gun to secure all of the seashells onto the bra. I went through them individually to make sure each shell was intact.

For the mermaid tail:

  1. Wrap the shimmery green fabric around your dress form, making sure that the fabric is inside out.

Lauren Conrad's DIY Mermaid Halloween Costume {easy to make and so cute}

  1. Pin the fabric in place with your straight pins so that you know where to go back and sew it together.
  2. Remove the shimmery green fabric once it is all pinned. Remove the straight pins as you sew and use your scissors to cut off excess fabric. This will be the layer underneath your dark sequined fabric.
  3. Wrap the dark green sequined fabric around your dress form and secure it with straight pins just like your first layer of fabric.

Lauren Conrad's DIY Mermaid Halloween Costume {easy to make and so cute}

  1. Pin the fabric just below where your bottom will be in the mermaid tail. I wanted to make sure that I was able to comfortably take off my mermaid costume without it ripping, so I sewed just the bottom of the tail together and safety pinned the top portion for when I wear it on Halloween.
  2. Grab the multi-colored tulle and began layering them to add volume to your mermaid tail. To sew the tulle tufts onto my tail, I took the needle and thread and pulled it through the center of my tulle layers and sewed it to the inside of the dark sequined fabric.

Lauren Conrad's DIY Mermaid Halloween Costume {easy to make and so cute}

  1. I wanted my tail to look extra glamorous so I sewed on a few extra layers of tulle. (Tip: Sewing tulle under the front of the tail made it easier for me to walk.)

Lauren Conrad's DIY Mermaid Halloween Costume {easy to make and so cute}

  1. Once you sew the final tulle tufts onto your mermaid tail, the only thing left to do is try on the completed costume. I wore my mermaid skirt so that it just hit above my seashell top. That way, it looks like the costume is one piece.

Lauren Conrad's DIY Mermaid Halloween Costume {easy to make and so cute}

I am so excited to wear this costume this weekend!

What are you dressing up as this year?

Let me know in the comments below. And be sure to share your photos if you decide to recreate this mermaid costume!

XO Lauren

 

Photos: Yoni Goldberg for LaurenConrad.com

 

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  • Zoe

    Where do I buy the shells from, I live in Australia?

  • Zoe

    This looks great! Where did you find the shells?

  • Alyssa

    I wish that you had a video of you doing some of the trickier parts, but that’s ok. I’m trying it anyway- about half way through now- and we will see how it turns out! Thank you for this!