Rainbow's Go Woori showed her determination for the year of 2012 with self-camera picture.

Go Woori posted a picture on her twitter on Dec. 31 with a comment "The last day of 365 days just started. Will work harder today.. but need some sleep now".

In the picture, Go Woori is wearing strong smokey eyeline with V-shaped faceline, looking a bit tired.

Netizens responded "Unni. Good nite.. or good morning?", "Performance was amazing".

In addition, Rainbow is scheduled to appear on stage for MBC 'K-Pop Festival'.

Photo: Go Woori's twitter