Continuing the march towards normal proportions, baby's legs now outmeasure the arms. And, finally, all four limbs have functional joints. Your fetus is squirming and wiggling like crazy down in the womb, though you probably still can't feel the movements.
We borrowed from Kelsi the National Geographic special, In the Womb: Multiples, and watched it last night. (Wouldn't Womb and the Multiples be an awesome name for a band?) I learned that twins in the womb like to kick each other in the face a lot. Or maybe that was the slo-mo video of CGI babies they showed over and over again.