Sofia Richie makes her Kardashians debut

Sofia Richie makes her KUWTK debut

What will Kourtney think?

Sofia Richie is finally set to make her Keeping Up With the Kardashians debut - two years after she first began dating Kourtney Kardashian's ex, Scott Disick.

And according the promo for the new season, Kourtney found the whole situation "bizarre".

WATCH: Sofia Richie makes her debut on KUWTK

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In the teaser, Scott, 36, can be heard saying: "It is a really awkward situation" as he and Sofia, 21, were joined at the table by his ex partner Kourtney during their winter family holiday.

Kourtney then says "it's bizarre" as she glared at the two of them.

The promo then switches to another scene, and this time Kourtney is on the couch with Scott as he tells her: "I want you and Sofia to be comfortable," adding that "It does like take a toll on me."

Sofia's appearance on KUWTK comes after she appeared on Scott's spinoff show Flip It Like Disick.

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While her show appearance proves that Sofia and Scott are becoming more serious, which may mean spending more time with Kourtney too.

Scott and Kourtney met in 2006 at a party thrown by Girls Gone Wild founder Joe Francis in Mexico.

They welcomed three children together, Mason, 9, Penelope, 7, and Reign, 4, before splitting in 2015.

Keeping Up With The Kardashians returns Sunday, October 6 on E!.

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