Kourtney Kardashian reportedly wants her wedding to rival sister Kim’s.

The reality star is apparently planning to exchange vows with her partner of seven years, Scott Disick, while her younger sister Kim is reportedly planning to marry fiancé Kanye West in May.

And RadarOnline reports there could be a bit of sibling rivalry over who will have the bigger nuptials.

“Kourtney has already seen Kim have an over-the-top wedding with Kris Humphries and now she’s watching her sister turn her Kanye West West date into another big affair and she’s getting mad that her own wedding is going to be overshadowed,” a source said, adding, “She wants her wedding to be just as spectacular as Kim’s.”

The outlet claims Kourtney and Scott, who share four-year-old son Mason and 20-month-old daughter Penelope, will tie the knot in Mexico.

Kanye and Kim are meanwhile planning a ceremony in Paris, according to reports.

Kim was previously wed to music producer Damon Thomas from 2000-2003 and was married to Kris Humphries for 72 days in 2011. Rumours have been swirling Kanye is planning for their wedding to be the event of the year.

Apparently Kourtney is upset the pair are stealing her limelight with their plans.

“For a really long time Kourtney has felt like she is living in Kim’s shadow but she doesn’t want her wedding to be second to Kim’s third trip down the aisle,” the insider continued.

“Everyone knows that Kim is the most popular sister and Kourtney really wanted her wedding to be special, so she’s not planning to let Kim steal her spotlight now.”

Spokespersons for the Kardashians have yet to comment on the claims.