The Hottest Celebrity Engagement Rings

While Kim Kardashian's 20.5 carat engagement ring from fiance Kris Humphries is stunning, it's not the only celebrity bauble to catch our eyes lately. From Carrie Underwood's 4-carat Ashoka-cut diamond to Hilary Duff's 14-carat, million-dollar princess-cut dazzler, we've rounded up our favorite star engagement rings.

Prince William

proposed to Kate Middleton with his mother Princess Diana's sapphire and diamond engagement ring.

Jim Toth

popped the question to Reese Witherspoon with a 4-carat Ashoka-cut diamond engagement ring.

Kate Hudson

officially became the fiancée of longtime boyfriend Matthew Bellamy when he proposed with an emerald-cut diamond ring.

Natalie Portman

said yes to Benjamin Millepied when he proposed with a ring designed by Jamie Wolf.

Mike Fisher

asked for carrie Underwood's hand in marriage with a ring by Jonathon Arndt.

Stephen Moyer

proposed to his True Blood costar Anna Paquin with a rough-cut Cathy Waterman ring. "I have been friends with Stephen forever. Watching him fall in love with Anna was magical. He lights up around her...and she glows when he is around," Waterman told us exclusively. "He put such thought and care into the ring that he proposed with...hours looking into stones, looking for the reflection that said 'Anna.' And he nailed it."

When Darren Legallo proposed to Amy Adams, he presented the actress with a 1-carat brilliant-cut diamond ring from Jean Dousset.

Kate Moss's

boyfriend Jamie Hince, guitarist of The Kills, popped the question with a vintage diamond engagement ring from the '20s.

Eva Amurri's

soccer player fiancé Kyle Martino proposed with a round diamond solitaire, which is surrounded by diamonds and set on a pave diamond band.

Zara Phillips

, Queen Elizabeth's granddaughter and daughter of Princess Anne (which means she's Prince William's cousin), announced her engagement to English professional rugby player Mike Tindall last December. Tindall gave Phillips, a champion equestrian, a diamond solitaire.

Musician Martyn Lenoble proposed to Christina Applegate last Valentine's Day with an antique-style sparkler. The ring boasts approximately four carats of diamonds and cost about $70,000.

Dancing with the Stars

judge Carrie Ann Inaba was filling in for Kelly Ripa as co-host of Live With Regis amp Kelly when her boyfriend Jesse Sloan proposed live on air! Sloan appeared presenting his girlfriend with a 2.5-carat diamond engagement ring. "Will you marry me?" he asked. Inaba responded yes! The princess-cut sparkler was designed by Rafinity.

NHL hockey player Mike Comrie proposed to Hilary Duff with a 14-carat, million dollar princess-cut dazzler.