Hey @XxRajeevxX! Welcome to the forums!
We refer to that as “Ghosting.” There is a lot of activity around the forums with multiple use-cases that solve it, as Lumen is somewhat new it tends to be the cause for ghosting with certain older models (That skin was created in UE4 and was before Lumen existed. It’s coincidental that it is the only skin she has that does this).
Check out this forum post where others have used different AntiAliasing settings to get around the ghosting issue!