Mariah Carey is dueting with Ryan Reynolds! The singer took to TikTok on Tuesday to share a video of herself singing her 1995 song, «Fantasy,» alongside footage of Reynolds doing the same.Carey's post came days after Reynolds shared his rendition of the track, following his decision to put the song in his film, .«Go see this weekend so I can stop doing this,» Reynolds captioned his video, which showed him sitting still as the song began, before epically busting out dance moves and lip-syncing