Mississippi Code Title 93. Domestic Relations § 93-19-13

(1) All persons eighteen (18) years of age or older, if not otherwise disqualified, or prohibited by law, shall have the capacity to enter into binding contractual relationships affecting personal property. In addition, all persons eighteen (18) years of age or older shall have the capacity to enter into binding contractual relationships for the purpose of investing in mutual funds, stocks, bonds and any other publicly traded equities. Nothing in this section shall be construed to affect any contracts entered into prior to July 1, 1976.

(2) Any person who, upon attaining eighteen (18) years of age, but not having reached the age of majority, was in or remains in the legal custody of the Department of Human Services or Child Protection Services and residing within a qualified residential child care agency, as defined in Section 1 of this act, at any time on or after attaining thirteen (13) years of age, if not otherwise disqualified or prohibited by law, shall have the capacity to enter into binding agreements to lease real property to be occupied by the person as the actual place of residence, and to secure the necessary utility services necessary to make such place of residence habitable, including, but not limited to, electricity, natural gas, propane, water, sewage, garbage disposal and Internet services.

(3) In any legal action founded on a contract entered into by a person eighteen (18) years of age or older, the said person may sue in his own name as an adult and be sued in his own name as an adult and be served with process as an adult.