Reports Rose had been drafted in to replace Brian Johnson for the remaining dates of the Australian band's North American tour began circulating last week (ends25Mar16).
And now photos of him rehearsing with AC DC have surfaced online.
Axl, Angus Young and company were spotted at a rehearsal studio in Atlanta, Georgia on Friday (25Mar16), according to TMZ.com, who obtained a snap of the singer leaving the venue.
The GUNS N' ROSES frontman has also reunited with Slash and Duff MCKagan for a string of shows this spring and summer (16), including two headlining slots at the Coachella festival next month (Apr16).
Last week, a publicist for G N' R announced the band would be hitting the road for a 21-date North American tour, with dates and venues to be confirmed.
Johnson was forced to pull out of the remaining dates on AC DC's tour after doctors told him he would be risking permanent hearing loss if he continued with the live dates.
It is not known if Brian will rejoin the group for upcoming dates in Britain.