Josh Groban Engaged to Natalie McQueen!

announced his engagement to his actress girlfriend Natalie McQueen on Tuesday following four years of dating.

The 45-year-old standards singer proposed to the British 36-year-old at Snow White's Grotto, which was covered with flowers, at Disneyland Resort in Anaheim, .

'My best friend said yes!' Groban - who boasts 5 million social media followers - captioned the post.

'Sharing this life with you is my happiest place, @nataliemcqueen. Thank you @disneyweddings for helping make the best day of our lives (so far) so magical.'

The high lyric baritone belter and McQueen also shared a snap of themselves inside Sleeping Beauty Castle as the King Arthur Carrousel swirled behind them.

Disney's Fairy Tale Wedding reportedly charge grooms-to-be between $500 and $10,000+ to arrange official engagements at the 'happiest place on Earth.'

Groban - who's only an Oscar away from elite EGOT status - helped design the diamond 'true antique marquis' ring with 'genius' Auroro co-founder Tiffany Chao.

The West End thespian was thrilled with her wedding bling, writing via Instagram story: 'You captured everything I love and still made it uniquely me. Thank you, I couldn't love it more if I tried.'

In the comments, many celebrities congratulated the betrothed pair including Sarah Michelle Gellar who wrote: 'Awe yay!'