Selena Marie Gomez an haife shi ne a Grand Prairie, Texas a ranar 22 ga Yuli, 1992, ga Ricardo Joel Gomez da kuma tsohon 'yar wasan kwaikwayo Amanda Dawn "Mandy" Cornett. An kira Gomez bayan mawakiyar Tejano da kuma dan wasan kwaikwayo Selena Quintanilla-Pérez, wanda ya mutu a 1995. Mahaifinta na asalin Mexico ne yayin da mahaifiyarta, wanda aka karɓa, yana da wasu magabata na Italiya. Game da asalinsa na Hispanic, Gomez ya bayyana, "Iyalina suna da Quinceañeras, kuma muna zuwa coci na communion. Muna yin duk abin da Katolika ne, amma ba mu da wani abu na al'ada sai dai [cewa] mu je wurin shakatawa da kuma barbecues a ranar Lahadi bayan coci. Iyayen Gomez sun yi takaici lokacin da ta ke da shekaru biyar, kuma ta kasance tare da mahaifiyarta.
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