Estranged Son Snubs Reality Star Mom in Graduation Posts, Thanks Dad and Stepmom Instead

Collin Gosselin thanked his father and stepmother but omitted his mother in graduation Instagram posts.
Collin gave special thanks to his sister Hannah, father Jon, and Jon's ex Colleen Conrad for their support through high school.
Collin did not mention his mother Kate, despite her attendance at his graduation ceremony.
Collin has struggled with a strained relationship with his mother for years and previously spent time in an institution according to reports.
Collin, part of the famous Gosselin sextuplets, will pursue an engineering degree in college while also considering joining the Marine Corps.