SUDDENLY, stadiums are very hot.

Oprah has booked her first show of the new season – honoring 150 Olympic athletes – into a 4,000-seat outdoor stadium in downtown Chicago.

Fans started lining up over the weekend for tickets to the show in Millennium Park, set to air next Monday.

Some 2,000 tickets were made available to the public.

The rest are for the athletes and their families, according to officials.

Tickets for another 7,000 lawns seats will be available this week.

The show is being staged at the park – which opened in 2004 – as a showcase for Chicago, which is trying to get the 2016 Olympic Games.