A lesbian couple will marry Thursday at the Chapel of Love at the Mall of America in Bloomington, Minnesota as a gay marriage law takes effect.

Holli Bartelt and Amy Petrich of Wykoff are expected to tie the knot at the chapel at 12:01AM on Thursday, August 1.

The couple, together 2 years, became engaged in a photo booth at the mall, the Minnesota Star-Tribune reported.

According to Petrich's Facebook page, the engagement took place in April. Bartelt is a health coach, and Petrich works at the Mayo Clinic.

The wedding will incorporate the colors of the campaign to legalize marriage equality in Minnesota. Bartelt's two children, a boy and a girl, will dress in blue and orange.

Lawmakers legalized gay nuptials earlier this year after voters rejected an attempt to ban such unions last year.

A similar law will also take effect on August 1 in Rhode Island.

(Related: Westboro Baptist Church to protest start of Minnesota gay marriage law.)