Well if this isn't the scariest wearable smart clothing you've seen we can't imagine what is. The Smart Spider Dress is a collaboration between Intel, using the Edison system, and experimental designer Anouk Wipprecht.
The Smart Spider Dress isn't simply scary in look, it even moves "reacting to real-time biometrics based on pre-programmed social norms and violations". This translates to animatronic spider legs that are driven by sensors which, apparently, adapt to the user's emotions and desires.
The system can differentiate between 12 states of behavior as well as sensing up to 23-feet around the body. In reality this means it reacts to movement and breathing, so running at an aggressive pace will send the legs into attack mode but walking cautiously will allow the legs to "dance" with the wearer.
The designer previously used external sensors and storage but has now employed the Intel Edison as it's small enough to embed into the dress so it can learn its wearer on the go. The outfit itself is 3D printed with microprocessors, microcontrollers and other modules added in.
Real-world use could be to monitor health alerting an individual to vital signs reaching dangerous levels. Of course wearing this thing out and about you're likely to have that problem, after being attacked for looking so scary.