Congratulations are in order: Ashlee Simpson and Evan Ross are engaged!

Twitter/Ashlee Simpson

The son of the legendary singer Diana Ross proposed to his girlfriend of seven months whilst on holiday in Hawaii.

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The blushing bride-to-be shared the happy news via twitter with a picture of them and the large sparkler in tow with the caption: "My baby love and I are ENGAGED!!! Hallelujah Hawaii !!!"

Evan posted the same picture saying: "The love of my life said YES!!!!"

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They started dating in July 2013, but by November Evan was certain she was 'the one' and spoke openly of his desire to marry the 'Pieces of Me' singer.

Jessica Simpson's younger sister has previously been married before; she divorced rocker Peter Wentz in 2011. 

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