Definitely can't tell. Doesn't look like you have enough new growth yet (assuming your hair is relaxed and not just flat ironed). Visit this page >> http://www.naturallycurly.com/texture-typing and take the curl pattern quiz on the right side of the page. Although, personally I would argue that it's doesn't even matter what your curl patten is at this point because you'd still be dealing with mostly straight hair.
it looks like an 2B