2AM's Jo Kwon is elated by the recent news of Wonder Girls Sun's pregnancy.

Today, he tweeted 'Am I going to be an uncle? I'm gonna be an awesome uncle! My lovely sister, Sun-ye! Congratulations!' 

Jo Kwon and Sun shared their youth during their trainee years in the 'prodigy training project' Jo Kwon was the MC at Sun-ye's wedding back in January.

Earlier, Sun announced via Twitter her pregnancy. She tweeted "I have great respect for all mothers who have  experienced the wonder of a new life. We have been given  a honeymoon baby. We're near the end of the first trimester, so we thought we would share the great news. Please pray for the health of our baby."

Sun is currently enjoying her newlywed life with her husband in Canada.