The CBBC actress - who had starred in 'Millie Inbetween' and 'Almost Never' - has tragically passed away.
The BBC said in a statement: "We are so sorry to have to tell you that Mya-Lecia, who you will know from 'MillieInbetween' and 'Almost Never' has, very sadly, died.
"Mya-Lecia was a much loved part of the BBC Children's family, and a hugely talented actress, singer and dancer. We will miss her enormously and we are sure that you will want to join us in sending all our love to her family and friends.
"We know this news is very upsetting, and it may help to share how you are feeling with friends or a trusted adult. If you are struggling and there is no one you feel you can talk to about it, you can call Childline on 0800 11 11."
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The actress wrote: "So shocked and sad to hear about lovely Mya-Lecia Naylor. She was a beautiful and talented girl. A complete joy to be around on the set of Almost Never. Sending all my love to her family & friends. Rest in peace beautiful girl."
Her representatives A&J Management added in a statement: "It is with the deepest sorrow we have to announce that on Sunday 7th April Mya-Lecia Naylor, very sadly, died. Mya-Lecia was hugely talented and a big part of A&J, we will miss her greatly. Our love and thoughts are with all her family and friends at this difficult time."