I would consider it more 2c than 3a. I see lots of very strong twirls, but not really any full curls (spirals), and not much root curl, which many people here use as a way to differentiate between 2c and 3a. Your hair is gorgeous, by the way.

The thing to keep in mind is that curl pattern can be very transient and can vary greatly based on how you take care of your hair (products/techniques). Curl pattern is important for hair cuts and styling, but that's really about it. Products are best chosen by properties (texture, porosity, etc), and the right products and techniques will maximize your curl pattern, no matter what it is.

Modified CG since 11/5/11
CLEANSE: CJ Daily Fix, DevaCare No-Poo, CHS Treatment Shampoo
RO: SS Caitlin's Conditioner, CJ Beauticurls Strengthening
LI: SS Repairing Protein Treatment, CHS Silk Leave-In
STYLE: Re:Coil, Curl Keeper, Deva Ultra Defining Gel, Curls Rock Amplifier,Sweet Curls Elixirs Okra Gel and Hard Hold Gel, SS Curl Enhancing Jelly and Firm Hold Gel