Is Kate Gosselin engaged to Jeff Prescott? The former Jon and Kate Plus 8 star was spotted wearing a diamond engagement ring at a TLC event in Philadelphia this weekend, fueling speculation that Kate Gosselin might not be single for too much longer.

If she is, in fact, engaged, how will Jon Gosselin take the news? He and Kate Gosselin have been embroiled in a heated battle over care of their eight children ever since they separated several years ago. Jon Gosselin likely won’t react well if he learns there’s about to be a stepdad in his kids’ lives.

Kate Gosselin was beaming at the TLC block party in Philly, where she signed autographs and chatted with her fans.

Was her happiness over her work for TLC or a recent marriage proposal from millionaire Jeff Prescott?

Kate Gosselin Flaunts Ring On THAT Finger At TLC Block Party http://t.co/Gvi7YlmJ4t #KateGosselin pic.twitter.com/tH1zRWDOVn

— Radar Online (@radar_online) May 31, 2015

Kate Gosselin has said in recent interviews that she isn’t against settling down if the right man comes along, but that her children would always be her number one priority. Given a recent custody squabble between her and Jon Gosselin over one of their daughters, Hannah, that statement might not ring completely true with everyone.

Whoa… Kate Gosselin and Jon Gosselin’s custody battle for their daughter Hannah heats up! http://t.co/YgOLIMzJDJ

— OK! Magazine USA (@OKMagazine) May 21, 2015

Do you think Kate Gosselin has become secretly engaged? And if so, what is she waiting for? Why isn’t she sharing her exciting news with all her fans?