Sarah Tanno, Lady Gaga's longtime makeup artist and Global Artistry Director ... is giving some behind-the-scenes scoop at how she created Gaga's polar opposite beauty looks.

that made Lady Gaga's Grammy beauty so special Jackie ... And her Bowie-esque beauty looks were weeks in the making, her makeup artist Sarah Tanno tells PeopleStyle exclusively.

SiriusXM announced on Tuesday (March 4) that it will launch a channel dedicated to all things Lady Gaga ... her as an artist.” Check out some other clips of Gaga’s behind-the-scenes commentary ...

Their transformation TikTok video is set to the words of Lady Gaga, whose Haus Labs brand of make-up launched in the ... but they’re also seeing behind the scenes and the dedication it takes ...