It looks as though superstar Rihanna is quite the World Cup fan, as she expressed both her excitement and sorrow during the Germany versus Portugal game on her Twitter account Monday afternoon.

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The singer tweeted, "I hate watching games like this! 2 of my fave teams," before tweeting updates about the game to her fans.

She also hinted that she might be a huge Cristiano Ronaldo fan as she tweeted, "My baby Ronaldo :(" after Germany scored their first three goals. They ended up defeating Portugal in a 4-0 win that Rihanna celebrated by tweeting a picture of her with three of Germany's biggest stars, Lukas Podolski, Miroslav Klose and Bastian Schweinsteiger.

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While Ronaldo had a tough time winning on the pitch, his supermodel girlfriend Irina Shayk is the winner in their relationship today as the 28-year-old Russian beauty has been named as the World Cup girlfriend with the best hair in a recent poll.

The model, who has been the face of numerous fashion campaigns and magazine covers, took the top spot with almost a quarter of votes, according to Hello Magazine.

Coming in at second was Wayne Rooney's wife, fashion designer Coleen Rooney and Frank Lampard's fiancé, Christine Bleakly. Chart topper Shakira - who is dating Spanish soccer star Gerard Pique - came in at fourth place.

Portugal's next game is against the United States on Sunday, June 22nd at 6:00 p.m. EST.