65l Girls Rucksack What Size Rucksack Should I Take For 2 Months Travelling Round South East Asia?

What size rucksack should i take for 2 months travelling round South East Asia? - 65l girls rucksack

I am only 2 months, but I am not one of those who will not be used as 2 pair of shorts all the time, I take a lot of clothes! So I do not want all that I can, but want no problems. I thought 65l + 15 .. What do you think? Above all, the ideas of the other girls who were on the road ..