- six ▁North ▁American ▁dates ▁were ▁also ▁announced ▁on ▁March ▁ 2 9 , ▁ 2 0 1 1 . ▁The ▁opening ▁acts ▁were ▁announced ▁on ▁April ▁ 1 2 , ▁ 2 0 1 1 . ▁Spe ars ▁stated , ▁" This ▁is ▁the ▁Fem me ▁F ata le ▁tour ▁and ▁I ' m ▁thr illed ▁to ▁have ▁Nick i ▁M ina j , ▁Jess ie ▁and ▁the ▁Toy ▁Boys , ▁and ▁N er vo ▁join ▁me ▁and ▁get ▁everyone ▁on ▁the ▁dance ▁floor . ▁Can ' t ▁wait ▁to ▁take ▁the ▁Fem me ▁F atal es ▁on ▁the ▁road ." ▁T ick ets ▁for ▁select ▁mark ets ▁went ▁on ▁sale ▁on ▁April ▁ 3 0 , ▁ 2 0 1 1 , ▁at ▁ticket ▁s eller ▁T icket master ▁and ▁tour ▁prom oter ▁Live ▁Nation ' s ▁websites . ▁ ▁In ▁May ▁ 2 0 1 1 , ▁it ▁was ▁announced ▁that ▁Spe ars ▁would ▁head line ▁Summer fest ▁on ▁July ▁ 9 , ▁ 2 0 1 1 , ▁at ▁the ▁Marcus ▁Am ph it he ater ▁in ▁Mil w au kee . ▁She ▁previously ▁head lined ▁the ▁festival ▁on ▁July ▁ 8 , ▁ 2 0 0 0 , ▁during ▁the ▁O ops !... ▁I ▁Did ▁It ▁Again ▁World ▁Tour , ▁and ▁had ▁to ▁cancel ▁her ▁performance ▁during ▁The ▁O ny x ▁Hotel ▁Tour ▁in ▁ 2 0 0 4 ▁due ▁to ▁a ▁kne e ▁injury . ▁Summer fest ' s ▁entertain ment ▁director ▁Bob ▁Bab isch ▁said ,