Gene Simmons and Shannon Tweed

After 28 years and two children, KISS frontman Gene Simmons and girlfriend Shannon Tweed are tying the knot.

Simmons, 62, and Tweed, 54, will get married on Oct. 1 in Beverly Hills, according to their wedding invitation.  Entertainment Tonight first reported the news. The invitation was created by the couple's kids, Nick and Sophie.

Gene Simmons' Family Jewels gets real

The dress code for the ceremony? "Classy Cocktail Attire Requested, although we know some Rockstar attire will be worn."

Simmons proposed to Tweed in the season finale of their reality show Gene Simmons' Family Jewels.

The new season premieres Tuesday, Oct. 4 on A&E.