Jacobi is a Tony Award winner for Much Ado About Nothing and was Tony-nominated for playing Alan Turing in the 1987 drama Breaking the Code. McKellen was most recently seen on Broadway alongside Patrick Stewart in the double bill of No Man's Land/Waiting for Godot. He is a Tony Award winner for Amadeus. Jacobi and McKellen's screen credits are numerous.

Watch the two make the announcement below. Fans take note, you might just catch the duo at the Stonewall Inn! Their introduction begins around 1:47.

The 2015 march, which is themed "Complete the Dream," steps off at noon on Sunday, June 28.

  The two-mile march route begins in the caverns of Midtown Manhattan at 36th Street and Fifth Avenue. The march proceeds downtown via Fifth Avenue, turning west along 8th Street into the West Village until a sharp turn onto Christopher Street at Sixth Avenue. Marchers continue down Christopher Street, past The Stonewall Inn, until the route disperses at Greenwich Street.