Not everyone makes their money from their profession. Here are some celebrities who got extremely rich, not from doing what they do best, but from doing other things. All of them have become incredible millionaires from their lucrative side businesses and collaborations. Check it out:

1. 50 Cent’s Vitamin Water

50 Cent isn't just a rapper. He's a business man. He owned a stake in Glaceau's Vitamin Water which was sold to Coca Cola for $4.1 billion. Now he's apparently developing his own line of condoms called Magic Stick Condoms. No word on whether you could buy them for 50 cents or not.

2. Launching their own fragrances

The top selling celebrity perfume is Beyonce's fragrance - Heat. It was launched in 2011 and was meant to be synonymous with her confident, strong and sexy image. The fragrance has already made over $400 million worldwide.

3. Ashton Kutcher’s tech start-up investments

Ashton Kutcher makes a lot of money by being in movies but it is his investment appetite that keeps him super rich. He is an investor in companies like Skype, Foursquare, Airbnb and is the co-founder of a venture capitalist firm called A-Grade Investments.

4. Akon has made more money from Lady Gaga’s music than his own

Akon convinced CEO Jimmy Iovine to let him sign Lady Gaga to his own imprint, Kon Live when she was just starting out. What a hustle. Because she's made more tunes everyone will listen to compared to his own. He has said that he has made 10 times more money through her music than his own.

5. George Foreman’s grills

Punching people's lights out wasn't his ticket to mega richness. Instead, it was his grills. He became the spokesman for a fat-reducing grill that was named George Foreman Grill. He's sold over 100 million units and in 1999, he sold the rights to allow them to continue using his name for $137 million. He's already made some $200 million from grill endorsement. POW!

6. Sammy Hagar got rich off tequila

Who is Sammy Hagar you ask? Well, he's the lead singer of Van Halen. But he didn't make his fortune from his tunes. Instead, he got rich off tequila - Cabo Wabo. Hagar sold 80% of his company for $80 million.

7. David Beckham’s modeling career

David Beckham made a lot of money by playing football, but the real cash cow was his own body. With his good looks, he's made millions lending his face, chiseled abs and underwear-looks to numerous ad campaigns. He makes an estimated $200k a day for being the face of brands like Adidas and Diet Coke. There are more. He's got over $37 million in modeling contracts alone.

8. Beats by Dr. Dre

Dr. Dre is a rapper. What does he know about headphones you ask? Probably nothing. But he knows where to put his money and name at, that's for sure. If you've been following the news, Apple recently purchased Beats by Dre for $3 billion.

9. Aerosmith has made more money from Guitar Hero than their albums

Aerosmith has sold millions of albums, so they should be rich from that right? Turns out they make more money from Guitar Hero: Aerosmith. The game sold almost 600,000 copies in its first week, grossed $50 million in 3 months and has probably made them more money than any of their albums.