No, Irene Cara and Alessia Cara are not related.
Irene Cara
Irene Cara was an American singer and actress. Cara sang and co-wrote the song “Flashdance… What a Feeling”, for which she won an Academy Award for Best Original Song and a Grammy Award for Best Female Pop Vocal Performance in 1984.
She was born on March 18, 1959, in The Bronx, New York, United States to Gaspar Cara and Louise Cara.
At the age of three, Cara was one of five finalists for the “Little Miss America” pageant. She began to play the piano by ear, studied music, acting and dance seriously, and began taking dance lessons when she was five.
Alessia Cara
Alessia Caracciolo, known professionally as Alessia Cara, is a Canadian singer-songwriter. Born in Mississauga, Ontario, to Italian Canadian parents, she began posting covers of songs on YouTube at age 13.
She was born on July 11, 1996, in Canada to Enza Ciccione and Vincenzo Caracciolo.