The 25-year-old actress arrived at the wedding arm-in-arm with Nick and watched as her boyfriend Reeve Carney's sister Paris exchanged vows with Greg Garbo, the Jonas Brothers' bassist, reported Contactmusic.
There were no hard feelings with her ex-boyfriend, who was also a groomsman at the wedding as they both posed for pictures with the rest of the guests. "Congratulations Paris Carney and Greg Garbo, you were the most beautiful couple in the world tonight. Fairy tale," Greene posted on her Twitter page.
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