Joel Madden: I'm Gonna Marry My Baby Mama!

8/18/2007 12:15 PM PDT BY TMZ STAFF
0818_joel_madden-1Looks like Nicole Richie's baby won't be born out of wedlock after all!

Sources who attended the Hot 99.5 concert last night featuring Good Charlotte at the Clarendon Ballroom tell us Joel told the crowd he had just proposed to his jail-bound baby mama on Thursday. Congrats!

TMZ contacted Richie's rep to confirm the good news ... but haven't heard back yet.