Folie à Deux"? Joaquin Phoenix, Lady Gaga and director Todd Phillips break down the wild ending and Gaga's triumphant song.

Lady Gaga's appearance at the Los Angeles premiere of her new film has left fans wondering. The singer's look has sparked ...

The dancing stopped for Joker (Joaquin Phoenix) and Harley Quinn (Lady Gaga ... of "That's Life," featuring the off-camera Gaga. The Oscar-winning singer/actress had held back from full throttle ...

Despite co-starring alongside Lady Gaga ... “Poker Face” singer. More from Billboard SiriusXM Disney Jr. Radio Channel Arrives With Music From Mickey, Spidey & More 'Masked Singer' Judge ...