Billie Eilish wants her fans to know that it is cool being drug freeThe 18-year-old pop megastar sent a message with her T-shirt while arriving for rehearsals for her sold out tour kick-off at American Airlines Arena in Miami on Saturday.She donned her signature baggy style including top which had an image of a dove on it with the words 'Drug Free' emblazoned on it.Scroll down for video 'Drug free': Billie Eilish sent a message with her T-shirt while arriving for rehearsals for her sold out tour kick-off at American Airlines Arena in Miami on SaturdayThe five-time Grammy winner also donned black denim shorts, white leggings, and black and white Air Jordan 1 Retro High OG sneakers as she prepared for herWhere Do We Go?
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