Hi!!
I'm 24 years old. I finished my Law degree in 2005 and I would like to do a LLM about International Criminal Law and Human Rights, but I'm not gonna to be able to do it, maybe till 2008- 2009, when I'll be 26 or 27 years old; do you think is too late??
What do you think is the better age to do a LLM??

The sooner the better ;-)

It's definitely not too late. In fact, it will be ideal if you bring a few years of work experience to the LL.M. classroom rather than being fresh out of your undergraduate law school.

I agree, i've ben workign for six years and will start an LLM next year. I've emailed some current students from various schools and they all range in age most of them late 20s to late 30's and even older! where are you applying?