With rumors of infidelity and "Momzilla" moments swirling, the fifth season of "Jon & Kate Plus 8" opened with the family of Jon and Kate Gosselin awash in the glare of celebrity gossip.
But what do you know about the Pennsylvania family of 10?
Infertility to parenthood: After getting married in 1999, Kate was diagnosed with polycystic ovarian syndrome. Learn about the problems PCOS can cause.
First set of twins: Kate underwent fertility treatments and gave birth to Madelyn and Cara in 2000.
Sextuplets make eight: When TV producers heard Kate was pregnant with a second set of multiples, they called the couple. With cameras rolling, viewers watched as a family of four added six new babies in 2004.