There are so many reasons I love having sisters. My wardrobe has more than doubled, for one. But I also have two teammates in life who’ll always be rooting for me no matter what. They know me from beginning to end.

Growing up, we even had a secret language, which would endlessly annoy our two brothers, and we’ve stayed just as close as we’ve gotten older. About 10 years ago, my sister Chioma [below, left] went on a yearlong backpacking trip to Central and South America.

Courtesy Uzo Aduba

Before she left, she gave my other sister, Onyi [above, right], and me each a gold bracelet by the brand Coatt. At first I thought it was just a cute little piece of jewelry, but then Chioma explained that the dots and dashes spell out “sister” in Morse code.

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I loved that it had a hidden meaning—it reminded me of our secret language from all those years ago. When she was away, I wore the bracelet every single day.

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Brian Henn

Now I still put it on whenever I travel because it makes me feel closer to my sisters even though we’re miles apart. It’s understated and cool, and I can’t live without it. Mostly because I can’t live without them.

—As told to Jennifer Ferrise

Aduba stars in Orange Is the New Black on Netflix.

For more stories like this, pick up the May issue of InStyle, available on newsstands and for digital download now.