* Милый (pronounced *mee-lee*) is the masculine form.
* Милая (pronounced *mee-laya*) is the feminine form.
Here are some examples:
* Милый котенок (mee-lee ka-tyo-nok) - Cute kitten
* Милая собачка (mee-laya sa-bach-ka) - Cute dog
* Ты такой милый! (ty ta-koy mee-lee!) - You are so cute!
There are also other ways to say "cute" in Russian, depending on the context and nuance you want to convey:
* Симпатичный/Симпатичная (sim-pa-teech-ny/sim-pa-teech-naya) - Attractive, appealing.
* Прекрасный/Прекрасная (pre-kra-sny/pre-kra-snaya) - Beautiful, gorgeous.
* Забавный/Забавная (za-bav-ny/za-bav-naya) - Funny, amusing.
* Красавец/Красавица (kra-sa-vets/kra-sa-vi-tsa) - Handsome/Beautiful (more formal).
The choice depends on the specific situation and what you want to emphasize.