And wow.......what a sparkler it is!! Lady Gaga proudly showed off her stunning heart-shaped diamond engagement ring on Monday after accepting

her boyfriend Taylor Kinney's marriage proposal on Valentine's Day.

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The newly-engaged couple were seen celebrating afterwards with a romantic dinner at Lady Gaga's family restaurant Joanne Trattoria on Manhattan's upper west side. The couple first met four years ago when he starred in her You and I music video. 

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