Last week, it emerged that Nicole Scherzinger will guest star in the show as Robin's former friend Jessica Glitter.
Smulders has now explained that a future episode of How I Met Your Mother will feature Robin and Jessica's former Canadian chatshow.
"It's more of a variety show than us revealing any sort of lost music video," she told Entertainment Weekly. "It's sort of the beginning to Robin Sparkles's career. And it's like a terrible Canadian variety show."
Smulders suggested that there will be a song in the episode but continued: "I don't even know if they've written it yet. But I think it's going to be loaded with sexual innuendoes."
Smulders also confirmed that there will be a wedding in the new season but refused to reveal who is getting married.
However, she said that she was "pleased" when she discovered the identity of the bride or groom.
How I Met Your Mother returns on September 20 on CBS.