Watch : ‘Mama June’ Star Jessica Shannon's Ex Shyann McCant Admits to Cheating Days Before Divorce FilingJessica "Chubbs" Shannon is sharing further insight into her breakup. Four days after Shyann McCant admitted she cheated on the Mama June: Family Crisis star during their relationship, Shannon filed for divorce, with court documents obtained by E! News revealing the grounds for the dissolution of their marriage. The 29-year-old—the second oldest of June "Mama June" Shannon's four kids and half-sister of Alana "Honey Boo Boo" Thompson—also confirmed that she would no longer be legally using McCant's last name as part of their settlement agreement. McCant's infidelity admission comes nearly two months after Shannon—who listed their date of separation as June 1—confirmed that they had broken up following one year of marriage.