I've heard a lot of ages of how old the Winx are and here's my opinion . . .

Season 1

Winx:

Bloom - I think she's like 15 in season one because she's a freshman.

Stella - I know the Stellais older than the other girls because she failled her first an at Alfea so I would say she's 16

Tecna - I'm pretty sure that she's 15 like Bloom.

Musa - I think Musa's about 15.

Flora - Flora's is about 15 too because she's a freshman at Alfea.

*NOTE LAYLA HAS NOT JOINED THE WINX YET SO I DIDN"T PUT HER ON*

Specialist:

Sky - Is about 16 because he was there last an *As a dit par Stella*

Brandon - Is also 16 because...