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.
3a/f/iii Before the chop- Donated to Locks of Love, January 2013
Modified CG since 11/5/11
CO-WASH: VO5 Vanilla Mint Tea Clarifying, DevaCare No-Poo
CLARIFY: CHS Treatment Shampoo (used prior to PT/DT)
RO: DevaCare One Condition, Regis Olive Oil
LI: Cure Care, As I Am Leave-In
STYLE: Re:Coil, Curl Keeper, Biotera Gel, Deva Ultra Defining Gel, GVP Liquid Sculpting Gel, Curls Rock Amplifier and Strong Hold Mousse
PT/DT: IAGirl's PT, One n' Only Argan Hydrating Mask