There really isn't a Spanish word for "besties", but you can say "Mejores amigas" (Best girl friends) or "Mejores amigos" (Best guy friends or best guy/girl friends).
yo amo a mis mejores amigas desire y chelsy
Besties - 2013 was released on: USA: 2 April 2013 (internet)
Besties - 2014 was released on: USA: 1 January 2014 (internet)
BESTIES FOUGHT LE GASP THEY ARE SEPARATING
They were besties
Besties - 2012 was released on: USA: 22 September 2012 (Austin Fantastic Fest) (premiere)
the way to write "i" in spanish is "yo"I= yo
Nothing But Besties - 2010 was released on: USA: 31 July 2010 (Duke City Shootout)
The slang term spelled besties can mean best friends.The form "beasties" is a stereotypically Scottish term for creatures or monsters.
They are bestfriends
In Spanish, you write '725' - 'setecientos veinticinco'.
How to write "our hearts are broken" in Spanish.