Billy Corgan and Chloe Mendel share son Augustus ... the couple and their two children blowing out the candles on her birthday cake, and concluded her caption with news of the engagement.

Billy Corgan and his wife ... Chloe shared a video on Instagram of herself and her children blowing out birthday candles on her cake to announce the news. “'Tis true, I turned 30 yesterday ...

Congrats are in order for Smashing Pumpkins frontman Billy Corgan and ... to blow out the candles on her birthday cake. The couple met while Mendel was managing Corgan's Madame Zuzu's tea shop ...