15 Celebrities You Didn't Realize Own Major Business EmpiresActors and musicians often step outside of entertainment and expand their names' power into the retail, restaurant, liquor and investment industries.

We fell for Paul Newman's acting talents long before we bought his salad dressing. And Dr. Dre mapped the future of hip-hop before his Beats headphones made him incredibly rich.

Actors and musicians often step outside of entertainment and expand their names' power into the retail, restaurant, liquor and investment industries.

Sometimes, these side businesses rake in enough that it's surprising they aren't what the celebrity is primarily known for.

Check out these 15 celebrities who invested in other areas and hit big.

Ashton Kutcher, A-Grade Investments

You have a lot to thank Ashton Kutcher for.

The "That "70s Show" actor's A-Grade Investments put money intoUber, Airbnb, Spotify, Shazam and Soundcloud. In 2010, Kutcher cofounded the venture-capital firm, which invests in technology startups ("problem solvers," he said), with entertainment manager Guy Oseary.

In 2011,The New York Timesreported that the investments likely ranged from $50,000 to $200,000.TechTimesreported that he had $100 million worth of investments in 2014. So it's not hard to understand why he tried to do somefree promotion on "Two and a Half Men."

Magic Johnson, Magic Johnson Enterprises

The NBA legend founded his investment company in 1987 with a mission to strengthen urban and underserved communities.

Throughout thehistory of the company, he's had deals with Pepsi-Cola, Sony Retail Entertainment (to create the multiplexes of Magic Johnson Theatres), T.G.I. Friday's, Founders National Bank, 24 Hour Fitness, Burger King, Best Buy and more. In 2010, his deals to sell his stake in the Los Angeles Lakers and his 125 Starbucks storesnetted him about $100 million. In 2012, he became co-owner of the LA Dodgers, a purchase of $2 billion. MJE is reportedly worth$1 billion.

Magic on the basketball court, and magic in the boardroom.

Jessica Alba, The Honest Company

In 2011, the "Dark Angel" and "Fantastic Four" actress cofounded The Honest Company, which supplies nontoxic household products and has a promise of transparency with itsHonestly FREE Guarantee告诉客户源自ins of the products. Though itsclaims have faced scrutiny, the company wasvalued at $1.7 billionin 2015. That's a lot of diapers sold.

Bono, Elevation Partners

U2乐队的太阳镜,每个人都知道波诺d activism, but not so much the fact that he's a cofounder of Elevation Partners, a private-equity firm that invests in new media and technology.

The firm is named after the U2 song "Elevation." According toBloomberg, Elevation Partners has invested $1.76 billion, with a 12% net internal rate of return. And you might recognize some names from itsportfolio: Palm,Inc., Facebook,Forbesand Yelp.

The Independentreported that the groupbrought in $1.4 billionfrom its investment in Facebook alone.

George Clooney, Casamigos Tequila

George Clooney and Rande Gerber, husband of Cindy Crawford, at one time had twin Mexican mansions and then decided to have their own house tequila.

The two worked with a master distiller to perfect it, and afterdrinking about 1,000 bottles a year, Clooney and Gerber went legit and began selling it in 2013. The tequila has been very successful and wongold medalsfrom several spirits competitions and was listed as an Oprah favorite.

It's apparently so good that you couldget in bed with Clooney or Crawford.

Gwen Stefani, L.A.M.B.

The No Doubt rocker took her distinctive stage style and offered it to the world.

L.A.M.B. was founded in 2003 and features shoes, handbags and sunglasses. Her collections were standouts at the spring and summer New York Fashion Weeks from 2006 to 2008. StarsReese Witherspoon, Cameron Diaz, Carrie Underwood and more have all worn Stefani's designs. L.A.M.B. shoes can come with a price tag of up to$300. "Rich Girl" seems even more fitting now.

Nas, QueensBridge Venture Partners, HSTRY

The rapper hasn't put out a new album lately, but he hasn't paused his entrepreneurial career.

Nas' venture-capital firm hasbacked major serviceslike Dropbox and Lyft -- which have a$10 billionand$5.5 billionvaluation, respectively -- along with Tilt, Casper, Virgin Mega and more. Out of the 100 companies that pitch to QBVP each month, Nas' partner Anthony Saleh toldCNBCthat the firm invests in about 20 a year, with a backing that ranges from $100,000 to $500,000 a company.

To pinpoint one interesting investment choice, Nas joined a $4 million investment deal with others for a startup that createsenergy bars with cricket flour.

Nas also has his own clothing company called HSTRY, which came out with a special"Ghostbusters"-themed linein May.

Serena Williams, HSN Collection

When she isn't dominating on the tennis court ordancing for Beyoncé, Serena Williams is designing her own line at HSN. It debuted at New York Fashion Week and has earned her thementorship ofVogueeditor Anna Wintour. Her collection ranges from $30 to $70, and has updated looks for tunics, fringe jackets and more.

Robert De Niro, Nobu Restaurants

TheGoodfellasandTaxi Driverlegend showed he has refined tastes when he invested, with two others, in acclaimed chef Nobuyuki Matsuhisa, mastermind of Nobu.

The four together launched Nobu Fifty Seven in 2005. Now they have the Nobu Restaurants chain of more than 30 locations worldwide. When a fifth investor purchased a share in 2015,Reutersreported that the valuation of the restaurant and hotel chain was a half-billion dollars. Though there areless kind things mentioned about the hotelsthan the sushi restaurants.

Will Ferrell, "Funny or Die"

Will Ferrell is responsible for a lot of comedy, includingAnchormanandElf, but his name is also attached toBetween Two Ferns,Drunk Historyand the recentDonald Trump's The Art of the Deal: The Movie.The comedy legend is a founding father of Funny or Die, a comedy-video website that hosts user-generated content as well as exclusives with celebrities, including Judd Apatow, Charlize Theron, Jennifer Lawrence and Jon Hamm.

The website remains popular but has recently experienced some internal turmoil. A deal ultimately fell through for the site to be sold, though it did make public an estimated$300 million valuationand recentlyclosed a California officeand lost 30% of its staff.

Sammy Hagar, Cabo Wabo

The Red Rocker and Van Halen singer has made a killing thanks to Cabo Wabo. The fun name isn't just a Van Halen song. It's also Hagar's chain of restaurants and nightclubs in Cabo San Lucas, Hollywood, Lake Tahoe and Las Vegas. Initially, it was a failure, but Hagar bought out his bandmates, got a new partner in 1994 and remodeled.

Cabo Wabo was also the name of a tequila Hagar owned, though he sold that in 2007 for $80 million, according toCNN.

Mark and Donnie Wahlberg, Wahlburgers

Mark and Donnie might have bigger names, but Paul is the star of Wahlburgers.

The Wahlberg brothers opened the restaurant chain in 2011, with the first location in Hingham, Massachusetts -- an hour from the Wahlbergs' hometown of Boston. The chain now has multiple locations in Massachusetts, Las Vegas, and Philadelphia and one in Coney Island. But as商业内幕reported, the chain will expand to 118 locations in the next five to seven years. The original location earns $5 million in sales annually.

You can get a more in-depth look into the Wahlbergs' lives and the gourmet-burger chain on A&E's Emmy-nominated reality series, "Wahlburgers."

Kate Hudson, Fabletics

TheAlmost FamousandHow to Lose a Guy in 10 Daysactress found major success with her Fabletics athletic-wear line from JustFab.

According toBloomberg, Fabletics is JustFab's fastest-growing label, with sales tripling from $50 million to $150 million in its second year. With the online success, Fabletics has a plan over the next three to five years to open 75 to 100 brick-and-mortar stores, according toForbes.

Despite thebacklash over JustFab's business model, Fabletics is still growing.

Gloria and Emilio Estefan, restaurants, hotels, Univision and the Miami Dolphins

Gloria and Emilio Estefan are legends in the music business, but the two make quite a living from their other ventures in Florida. Both Bongos Cuban Cafe and Larios on the Beach are favorites among locals and have won many awards, while Larios specifically helped rebuild the South Beach area, according toThe Miami Herald. Their hotels, Costa d'Este and The Cardozo, are just as successful.Visit Floridaeven dubbed Costa d'Este a "hidden jewel."

The duo also becameminority ownersof the Miami Dolphins, a team valued byForbesat $1.8 billion, in 2009.

Gloria is alsoon the board of directorsfor Univision, which was valued at about $20 billion, according toThe Hollywood Reporter.

Kevin Costner, Ocean Therapy Solutions

TheBodyguardandField of Dreamsactor is in a field you probably wouldn't expect.

According toGawker, Costner was inspired to create a device that would separate water from oil after the Exxon Valdez oil spill in 1989 and his own film "Waterworld." In 2010,BP bought 32 unitsto help clean up the disaster left by the oil spill in the Gulf of Mexico. The devices can separate 200 gallons of oil from water a minute, according toThe New York Times.商业内幕reported that Costner made$15 millionfrom the deal.