It depends on what you mean by "pictures". If they are photographs, it is "las gran fotos."
For artwork, "las gran pinturas".
If you say "fotos grandes", you are not really saying "great pictures", but rather "big pictures".
pelicula excelente (of a film)
foto fantastica (of a photo)
pintura magnifica (of a painting)
I've varied the adjectives (excellent, fantastic, magnificent) because 'great' is too vague in Spanish. The ones given are interchangeable.
los fotos
Tatarabuela rebisabuela Bisabuela --- great grandmother
Me gusta tomar fotos.
You say Tia abuela.
How do you say, "It has been a while" in spanish
los fotos
Culo grande is how you say great butt in Spanish.
tienes fotos bonitas!
i put up new pictures on my myspace its the first album
Tatarabuela rebisabuela Bisabuela --- great grandmother
Comentar mis fotos
Las fotos estuvieron bonitas.
Me gusta tomar fotos.
GenialGran
buenisimo
Emily ¿dónde están las fotos
You say Tia abuela.