Born in Toronto, Leah Miller attended Cardinal Carter Academy for the Arts before she moved to Los Angeles. While in L.A. She appeared in Ashton Kutcher's Punk'd and Down to Earth. After returning to Toronto, Miller became a MuchMusic VJ in 2004 and hosted MuchOnDemand, the MuchMusic Video Awards, and Live@Much specials.

Miller is an award-winning TV personality having won a Gemini for her role as host of the Gemini-nominated show So You Think You Can Dance Canada. Her passion for music and entertainment helped her become a correspondent for etalk, Canada's number one entertainment news program, in 2009. In February 2010, Miller reported entertainment news from the Vancouver 2010 Olympic Winter Games for CTV, as part of the etalk team.

Miller is the envy of pop-culture junkies everywhere having interviewed many big-name stars, including Halle Berry, Matthew McConaughey, Kanye West, Rhianna, Hilary Duff, Malin Akerman, Jason Segal, and Paul Rudd.