Wallen will appear on the March 29 episode of the show.
The pop superstar, who took on the roles of both host and musical guest, also performed tracks from her new album, Mayhem.
The pop superstar took on double duty as both host and musical guest during the March 8 episode.
The pair also discussed sponcon at Coachella in this week's second promo for Gaga's host/musical guest stint tomorrow (March 8).
Both songs are featured on her third album, So Close to What.
Tate McRae will be this weekend's musical guest.
The 'SNL' cast member has thankfully never acted alongside the singer in a sketch.
The four-season Saturday Night Live castmember paid tribute to his late castmates Chris Farley, Phil Hartman & more.
O'Connor famously tore up a photo of then-Pope John Paul II to end her 1992 Saturday Night Live performance.
The chaos of Kelsey and Matt's marriage continued on the 50th anniversary of 'SNL.'
