Now we know why Paulina Gretzky broke our hearts and didn't post any hot Halloween costumes to her Instagram page last week!

The 24-year-old hockey heiress was in Shanghai, China supporting her fiancé, golfer Dustin Johnson, who won the HSBC Champions tournament (and a cool $1.4 million to boot).

The blond starlet posted a sweet Instagram photo of the happy couple on Sunday celebrating Johnson's win with a celebratory kiss.

"Congrats baby @djohnsonpga!! So happy I could be there for another WIN," Paulina captioned the pic, which featured the photogenic socialite sporting a fitted cardigan over a black blouse and black skinny jeans.

Seems like Wayne Gretzky's daughter is a lucky charm for the eight-time PGA Tour winner; the sexy WAG has followed her husband-to-be to many of his tournaments including the RBC Canadian Open in Toronto and the Augusta National Golf Course.

The twosome have been joined at the hip ever since Johnson proposed to the Flare cover girl in August and have traveled around the world (in private jets, natch) to exotic locations where they have mingled with koalas and tigers.

We're calling it: Paulina and Dustin are the next Kim and Kanye!

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    Paulina kisses Dustin Johnson after he won the HSBC Champions tournament.

  • WGC - HSBC Champions: Day Four

    SHANGHAI, CHINA - NOVEMBER 03: Paulina Gretzky watches the play of her partner, Dustin Johnson of the USA during the final round of the WGC - HSBC Champions at the Sheshan International Golf Club on November 3, 2013 in Shanghai, China. (Photo by Andrew Redington/Getty Images)

  • WGC - HSBC Champions: Day Four

    SHANGHAI, CHINA - NOVEMBER 03: Paulina Gretzky watching Juston Johnson of the USA during the final round of the WGC - HSBC Champions at the Sheshan International Golf Club on November 3, 2013 in Shanghai, China. (Photo by Ross Kinnaird/Getty Images)

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    Dustin Johnson of the United States, left, and his fiancee Paulina Gretzky, right, embrace after winning the HSBC Champions golf tournament at the Sheshan International Golf Club in Shanghai, China, Sunday, Nov. 3, 2013. (AP Photo/Eugene Hoshiko)

  • WGC - HSBC Champions: Day Three

    SHANGHAI, CHINA - NOVEMBER 02: Paulina Gretzky follows the play of Dustin Johnson during the third round of the WGC-HSBC Champions at the Sheshan International Golf Club on November 2, 2013 in Shanghai, China. (Photo by Scott Halleran/Getty Images)

  • WGC - HSBC Champions: Day Three

    SHANGHAI, CHINA - NOVEMBER 02: Paulina Gretzky follows the play of Dustin Johnson during the third round of the WGC-HSBC Champions at the Sheshan International Golf Club on November 2, 2013 in Shanghai, China. (Photo by Scott Halleran/Getty Images)

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    Paulina Gretzky, partner of Dustin Johnson of the USA nurses a Joey during day two of the Perth International at Lake Karrinyup Country Club on October 18, 2013 in Perth, Australia. (Photo by Matt King/Getty Images)

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    Dustin Johnson of the USA nurses a Koala with his partner Paulina Gretzky as she nurses a Joey during day two of the Perth International at Lake Karrinyup Country Club on October 18, 2013 in Perth, Australia. (Photo by Matt King/Getty Images)

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    Paulina Gretzky, partner of Dustin Johnson of the USA nurses a Joey during day two of the Perth International at Lake Karrinyup Country Club on October 18, 2013 in Perth, Australia. (Photo by Matt King/Getty Images)

  • Paulina Gretzky watches the play of Dustin Johnson during the final round of the TOUR Championship by Coca-Cola at East Lake Golf Club on September 22, 2013 in Atlanta, Georgia.

  • Paulina Gretzky watches the play of Dustin Johnson during the final round of the TOUR Championship by Coca-Cola at East Lake Golf Club on September 22, 2013 in Atlanta, Georgia.

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  • Paulina Gretzky follows the play of Dustin Johnson during the second round of The Barclays at Liberty National Golf Club on August 23, 2013 in Jersey City, New Jersey.

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    A close-up of Paulina Gretzky's engagement ring.

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    Paulina Gretzky and Dustin Johnson celebrate their engagement.

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    Paulina Gretzky and Dustin Johnson at Wayne Gretzky's in Toronto.

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    CREDIT: Instagram

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  • NEXT: More Paulina Pics!

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  • CREDIT: Instagram

  • CREDIT: Instagram

  • CREDIT: Instagram

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