Taking to Instagram yesterday (2 June), Demi sent her congratulations to her pal, revealing to fans she was actually there to witness Iggy's now fiancé Nick Young pop the question.
In her latest post, Demi (who is happily loved-up herself with boyfriend Wilmer Valderrama) can be seen posing alongside Iggy as the Australian rapper proudly flaunts her HUGE engagement ring.
Alongside her photo, Demi said: "Could not be happier for this woman... (And yes this was literally my face for about an hour) Still can't believe I got to witness that last night.. So happy for you both... Love you so much lady."
After seeing the 'Skyscraper' singer's post, Iggy then replied: "Love you and thanks for coming... mine too!"
Demi's photo of the pair comes after Iggy announced she and LA Lakers star Nick Young are set to wed.
To reveal her happy news, she shared several loved-up snaps with her beau, including a close-up of her yellow-hued, diamond encrusted engagement ring.
Iggy told fans: "Happiest day #isaidyes."
Nick had proposed to the starlet in front of party-goers as he celebrated his 30th birthday. After getting down on one knee (all which was filmed on camera by one guest!), Nick gushed about his wife-to-be, tweeting: "She said yes. It's over man. I'm getting married!"
Iggy and Nick have officially been an item since November 2013. Congrats guys!
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