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While most successful stars make the bulk of their money from movies, TV shows and album and tour sales, many of them make a little extra on the side doing other things. OK, sometimes a lot extra.
Check out celebrities who have gotten even richer from side gigs:
1. Beauty and fashion lines: Many celebrities are always keen to launch branded products.
Among those who have found much success with theirs include Keeping Up With the Kardashians star Kylie Jenner, 18 who has Pacsun and Topshop clothing lines with sister Kendall Jenner, 19, and launched her own Kylie Lip Kit earlier this year, their brother-in-law Kanye West, who has his own Yeezy fashion lines and Adidas collections, and Katy Perry, 31, who struck deals with Claire's Accessories and Covergirl.
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2. Command performances (that they may regret): In addition to regular tour dates, music artists sometimes perform a one-time gig for a lot of moolah. And it doesn't always generate the best press.
A WikiLeaks reports stated that in 2009, Beyoncé, 34, and Usher, 37, were paid $1 million each to put on a personal New Year's Eve concert for Libyan dictator Moammar Gadhafi's Gadhafi's son Mutassim Gadhafi. Following a backlash, both artists donated their fees to charity.
Singer Nelly Furtato, 37, performed for the leader's family in 2007 in Italy. In 2011, the year he died, she said she was paid $1 million for her 45-minute show and that she plans to donate the money to charity.
In 2013, Jennifer Lopez, 46, angered human-rights activists when she performed "Happy Birthday" for Turkmenistan President Gurbanguly Berdimuhamedow, whose country has a history of human rights violations. She later apologized, saying she thought the concert had been thoroughly "vetted by her representatives."
3. Bring on the booze: Timberlake has his own Sauza Tequila, George Clooney, 55, co-founded Casamigos Tequila, Jay Z, 46, has his Armand de Brignac champagne and Drew Barrymore, 41, has her Barrymore wines.
Sean "Diddy" Combs, 46, is believed to be worth $750 million, part of which comes from his venture with alcoholic beverage maker Diageo over Cîroc vodka.
4. Ads—especially abroad (that they may regret): A well-known celebrity who acts in a commercial or appears in a print ad is usually regarded as a celeb spokesmodel for the company. This garners higher payments than those given to professional commercial actors and most models, sometimes in the six or even seven-figure range.
In 2013, Clooney, then-girlfriend Stacy Keibler, 36, Gerber and Gerber's wife Cindy Crawford,50, appeared in an ad for Casamigos tequila. The actor also starred in a 2011 commercial for the Norwegian bank DnB NOR, in which he appears to have gotten married.
Clooney's friend and frequent co-star Julia Roberts, 48, was reportedly paid $1.5 million to appear in a 2010 commercial for Italian coffee company Lavazza that aired in Europe. She did not have any lines in the ad.
In 2012, Ashton Kutcher, 38, came under fire for appearing in dark makeup to play "Raj," a "Bollywood producer" in an ad campaign for Popchips. Many called it racist. The campaign was axed and the snack company's founder and CEO later issued an apology, saying, "We did not intent to offend anyone." Perry was later named a new celebrity spokesmodel for the group.
5. Major endorsement deals:
Jennifer Lawrence, 25, who made about $52 million in 2015, has long been a celebrity spokesmodel for Dior, often sporting the luxury label's dresses on the red carpet.
And let's not forget about endorsements on social media—stars such as Scott Disick, 33, Khloe Kardashian, 31, Teresa Giudice, 44, Amber Rose, 32, Ciara, 30, Blac Chyna, 28, and Ashley Benson, 26, have occasionally advertised on their Instagram pages products such as tea and teeth whiteners.
Kim Kardashian: Hollywood, Getty Images
7. Restaurants: Jessica Biel, 34, is the co-owner of Los Angeles restaurant Au Fudge, which opened in March and caters especially to parents with children. It even features an activity room, complete with onsite "Au Fudge Au Pairs."
Robert De Niro, 72, co-founded the Nobu Japanese restaurant chain more than 20 years ago. Its Malibu location is especially popular with celebrities such as the Kardashian and Jenner family.
Thomas Tran / Tony Tran Photography
8. Nightclub and other promotional appearances: Celebs are often paid thousands of dollars to make a prominent appearance at nightclubs and are often dubbed "hosts" of parties there.
Scott Disick is often seen at such venues. According to GQ, he once made $70,000 or $80,000 a night in the U.S. and even scored a $250,000 deal for a several appearances in the U.K.
In 2015, Reese Witherspoon, 40, launched Draper James, which is mainly a clothing site, and Vanessa Hudgens, 27, launched Astral & Opal. And Lauren Conrad has retained her fans following the cancellation of The Hills with the help of her popular lifestyle and decor website, laurenconrad.com.
10. Production companies: They don't just act, they produce! Speaking of Witherspoon, she is among scores of celebs to manage her own production company. Her group, Pacific Standard, produced the hits Wild, which earned her an Oscar nomination, and Gone Girl, which does not feature her but earned main actress Rosamund Pike an Academy Award nod.
11. Stand-up Comedy:
Guess what Jerry Seinfeld, 62, did before Seinfeld made him rich and famous? The same thing as his character—stand-up comedy. In addition to collecting residuals from Seinfeld reruns and starring in his Comedians in Cars Getting Coffee online series, guess how he makes much of his money? Yep, stand-up comedy. A ticket to see Seinfeld live onstage in the United States ranges between about $75 to $200, and even more in foreign countries.
Louie star and writer Louis C.K., 48, charges less at home for his shows—even performing for as little as $20 during last-minute gigs in Los Angeles—but his tickets are relatively higher abroad as well. He will tour the U.S. in July and perform in countries such as Holland, England and Israel in August before returning to the United States for three massive shows at Madison Square Garden in New York City.
Even Home Improvement alum Tim Allen, who stars on the sitcom Last Man Standing, still does stand-up, performing mostly in Los Angeles and Las Vegas. Ar ar!
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12. Start-ups: Kutcher has invested in companies such as Spotify, Uber, Airbnb and Meerkat. Madonna, 57, invested $1.5 million in Vita Coco coconut water in 2010.
And in 2012, Jessica Alba co-founded her own business, the Honest Company, which is valued to be worth $1 billion and offers eco-friendly baby, bath, cleaning and wellness products. She owns between 15 and 20 percent of it.
Michael Rozman/Warner Bros.
13. Real estate:
Jeremy Renner, 45, and his friend and business partner Kristoffer Winters renovate old homes and then sell them for a profit. In 2013, they sold a '20s-style Art Deco mansion near Beverly Hills for $24 million. They paid $7 million for it three years prior.
Ellen DeGeneres, 58, made a profit of $15 million profit after selling a home to Napster founder Sean Parker for $55 million and also made a profit of $1 million after selling a $13 million Malibu home purchased from Pitt.