Bring back the Dark Lord as Delphini from Harry Potter and the Cursed Child

How To Dress Like Delphi

Delphini Diggory (also referred to as Delphini Riddle Black) is the only child of the Dark Lord Voldemort and Bellatrix Lestrange. Referred to as “the ultimate horcrux”, Delphini was just another way that Voldermort attempted to achieve immortality. Isn’t that why we all have children?

Delphi is a unique costume idea that even the most diehard Harry Potter fans will appreciate. From her beautiful hair to her muggle clothes to her mother’s pendant, we show you everything you need to make the best cosplay possible.


1. JACKET – Delphini spends much of Harry Potter and the Cursed Child in plain muggle clothing to conceal her true identity. As such, a regular oversized trucker or denim jacket is ideal for this look.

2. DRESS – Add a regular oversized tee or plain dress to maintain that low-key style.

3. JEANS – Like any millennial, Delphini is not afraid to rock those ripped skinny jeans. We’re right there with you, Delphi!

4. CHOKER – Delphini wears a black choker with her mother’s (Bellatrix Lestrange) bird skull pendant hanging from it.

5. PENDANT – You could get away with just this pendant on the included metal chain if you’re making a last-minute Harry Potter costume. However, for the best Deplhi outfit possible, we recommend adding the bird skull to a black choker.

6. BOOTS – The choice of footwear is really up to you for your Delphini costume. We went with a chunky pair of boots (Dr. Martens are perfect if you already own a pair) but canvas shoes or trainers will also work just fine.

7. HAIR DYE – One of the most defining physical characteristics is her light blonde hair with blue highlights. We recommend using a temporary blue dye to sparingly add your own streaks.

8. EYESHADOW – Finally, Delphi wears smoky blue eyeshadow to match her highlights. Optionally, you might want to add a temporary bird tattoo to your back (at the base of the neck) just like the character.


Delphini (also known as Delphi) is a central character in the play “Harry Potter and the Cursed Child”, written by Jack Thorne and based on an original story by J.K. Rowling.

She is revealed to be the daughter of Lord Voldermort (Tom Riddle) and Bellatrix Lestrange, with her conception a result of Bellatrix using a Time-Turner to travel back in time and conceive a child with Voldermort.

Having learned about her parentage, Delphin attempts to use a Time-Turner herself to prevent Voldermort’s defeat and reshape the future. To do so, she tricks Albus Potter (son of Harry Potter) into assisting her.

Eventually, her plans are thwarted by Harry and Albus Potter, along with their allies, and she is captured.

More DIY 'Delphi' Costume Ideas

Delphini is a fascinating and layered character that enriches the world of Harry Potter beyond the events of the original series. While some fans take issue with the direction of Harry Potter and the Cursed Child, we feel it only serves to enrich a series that we loved so much as children.

A DIY Delphini costume is a more unusual choice for Harry Potter fans, making it the perfect idea for anyone who wants to do something a little different. Plus, because of the fact that Delphi wears largely everyday ‘muggle’ clothing, it is also a super easy outfit to make at home.

You are certainly not alone in your love for this character. For more inspiration, check out more of our favorite homemade Delphini costumes on Pinterest!