Good job Taylor Kinney!

Lady Gaga got engaged to her longtime love, "Chicago Fire" star Taylor Kinney, on Valentine's Day, and took to Instagram on Wednesday to gush about her stunning -- and huge -- heart-shaped engagement ring.

He gave me his heart on Valentine's Day, and I said YES!

A photo posted by @ladygaga on

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The 28-year-old singer revealed the back of the Lorraine Schwartz engagement ring, which is sweetly inscribed with a "T <3 S," representing the couple's initials (Lady Gaga's real name is Stefani Germanotta).

"My favorite part of my engagement ring, Taylor and Lorraine designed "T��S" in white diamonds on the band," she wrote. "He always called me by my birth name. Since our very first date. I'm such a happy bride-to-be! I can't stop smiling!!"

The ring's reported price tag is no laughing matter. Expert estimates for the designer bling range from $400,000 to $500,000.

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Who wouldn't be happy with this ring?!

Seriously, even Britney Spears had to show her appreciation.

Kinney and Gaga have been dating since 2011, when the 33-year-old actor starred in her music video for "You & I." According to Us Weekly, the engagement was a family affair, as the two celebrated at her family's restaurant, Joanne Trattoria, in New York City.