The name Selina is a girl's name . Selina and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
The Selina spelling swims just below the Top 1000, within 20 babies of reaching the US popularity list. Selena and even Celine are much more popular, but the Selina spelling is used for the Julia Louis-Dreyfus character on Veep and is also the spelling used by Catwoman alter-ego Selina Kaye. While Selina looks as if it might be pronounced sel-eye-na and undoubtedly is by some bearers, its proper pronunciation is sel-ee-na.