Khloe Kardashian decided to leave her family behind and returned to the U.S. alone, reports TMZ. According to the site, she arrived in New York City after attending Kim Kardashian and Kanye West's wedding, which is estimated to cost millions.

TMZ guessed Khloe came back for work and not to ditch her family due to various reasons.

Meanwhile, Kris, Bruce Jenner, Kylie, Kendall and North West flew from Paris to LAX.

Kim Kardashian and Kanye West's Grand and Super Expensive Wedding—Details

E! Online shared details about how expensive Kim and Kanye's wedding was.

Wedding planner Jinane Kafrouny, senior event manager with Weddings Italy shared the wedding cost around $2.8 million. The estimate excludes costs the couple could have paid for the Paris leg of the wedding celebration.

"Cost of such an event would approximately be 2 million euros excluding flights, hotel stays and the French leg of the event," said Kafrouny to E! News.

"Catering company typically charges between 300-400 euros per person for such a menu inclusive of the wines," Kafrouny added. The site estimated there were 200 people at the reception and the total would be close to $110,000.

Also, hiring Andrea Bocelli was the most expensive. "Most expensive would be hiring Bocelli and the rental of Forte di Belvedere. Bocelli normally charges from 100,000 euros to a million euros as long as the event is close to his home. Bocelli is probably their friend so the cost might of been low," Kafrouny stated.

Kanye and Kim allegedly spent a whopping $400,000 to rent Forte di Belvedere for the ceremony.

The couple also paid for 100 rooms at the Westin Excelsior. The estimated cost for one night at the property for 100 rooms is $68,000.

The extravagant dinner at the Costes restaurant cost the couple $3,282.72. The pre-celebration ladies dinner was $409 per person.

Kanye surprised Kim by inviting Lana Del Rey for a live performance in Paris. Reportedly, that cost close to $2.8 million. Lana Del Rey has not confirmed the amount though.

What do you think about Kim and Kanye's grand wedding?

Television Personality Khloe Kardashian Walks Past Photographers in Paris
Television personality Khloe Kardashian walks past photographers in Paris May 20, 2014. U.S. television personality Kim Kardashian and rapper Kanye West will celebrate their wedding in Florence on May 24, an official from the mayor's office confirmed last Friday. REUTERS
Television Personality Khloe Kardashian Leaves an Apartment Building in Paris
Television personality Khloe Kardashian leaves an apartment building in Paris May 20, 2014. U.S. television personality Kim Kardashian and rapper Kanye West will celebrate their wedding in Florence on May 24, an official from the mayor's office confirmed last Friday. REUTERS
Kim Kardashian and Kanye West Arrive at the Metropolitan Museum of Art Costume Institute Gala Benefit in New York
Kim Kardashian and Kanye West arrive at the Metropolitan Museum of Art Costume Institute Gala Benefit celebrating the opening of "Charles James: Beyond Fashion" in Upper Manhattan, New York May 5, 2014. REUTERS
Kim Kardashian Arrives at the Metropolitan Museum of Art Costume Institute Gala Benefit in New York
Kim Kardashian arrives at the Metropolitan Museum of Art Costume Institute Gala Benefit celebrating the opening of "Charles James: Beyond Fashion" in Upper Manhattan, New York May 5, 2014. REUTERS
Kim Kardashian and Kanye West Arrive at the Metropolitan Museum of Art Costume Institute Gala Benefit in New York on May 5, 2014
Kim Kardashian and Kanye West arrive at the Metropolitan Museum of Art Costume Institute Gala Benefit celebrating the opening of "Charles James: Beyond Fashion" in Upper Manhattan, New York May 5, 2014. REUTERS
New York Kim Kardashian