Cindy Crawford attends The Love Ball to benefit the Design Industries Foundation for AIDS (DIFFA) in 1989.

Iman and Cindy attend The Love Ball in 1989.

Cindy Crawford circa 1990 in New York City.

Cindy at the Love Ball in 1991.

Cindy Crawford and Naomi Campbell attend a private party in New York in 1992.

At Versace's 'Rock 'N Rule' Fashion Show Gala to benefit in 1992.

Cindy Crawford at Harrods to promote Revlon in 1992.

Cindy Crawford and Richard Gere in 1992.

Cindy visited Israeli soldiers in the occupied territories in Israel in April, 1992.

Cindy participates in the 8th Annual Pediatric AIDS Foundation Carnival in 1997.

Karen Mulder (left), Cindy Crawford (centre) and Eva Herzigova during Herve Leger's Spring-Summer 1996 ready-to-wear collection presented in Paris in 1995.

At the 1993 MTV Video Music Awards.

Cindy models a Chanel swimsuit in Paris in 1993.

Cindy Crawford, Karl Lagerfeld and Claudia Schiffer during the Chanel fashion show in Paris - 1993.

Cindy Crawford and Claudia Schiffer backstage during the spring summer 1994 collections in Paris.

Cindy Crawford at the Herve Leger Spring 1996 show in Paris.

Kristen Johnston, Cindy Crawford and Angie Everhart star in '3rd Rock From the Sun' in 1998.

Naomi Campbell (left) and Cindy Crawford speak during the Rodeo Drive Walk of Style award in 2007.

This supposedly unretouched photo of Cindy Crawford caused waves when it was released in February 2015. Photographer John Russo declared that the image was 'stolen or unlawfully accessed and then altered and distributed to the media.'

Cindy's husband Rande Gerber posted this photo on his Instagram soon after the 'unretouched' photo was released - showing a trim and cellulite-free Cindy on holiday.

During a shoot with Elle Canada, Cindy told the magazine the unretouched photo scandal 'blindsided' her and wondered why 'seeing a bad picture of me would make other people feel good?'

Cindy and her daughter Kaia Jordan Gerber attend the Balmain x H&M Los Angeles VIP pre-launch in November 2015.

Cindy Crawford signs copies of her book 'Becoming' in 2015.

Cindy posted this makeup-free picture of herself to Instagram on her 50th birthday, captioning the image 'First day at 50.' If this is what 50 looks like, we'll have what she's having!