Lindsay Lohan and her fiancé make their red carpet debut

Los Angeles- Lindsay Lohan and fiancé Egor Tarabasov made their red carpet debut as a couple at the Caudwell Children's Butterfly Ball in London on Wednesday.

The Mean Girls actress and Russian heir, 22, looked extremely happy as they posed for pictures at their first public appearance since they got engaged.

Taking to her Instagram to share a picture next to her future husband, Lindsay - who now lives in the British capital - wrote: "#onwednesdayswewearpink #butterflyball2016 @clairelcaudwell and @johncaudwell thank you for including us to support all of the work you do for children bless you (sic)"

And the hunky businessman also shared the same photo of the pair at the charity bash and said he felt "proud" to attend the event with the flame-haired beauty.

Alongside the photo, he wrote: "Proud to be at #butterflyball16 with @lindsaylohan supporting @caudwellchildren thank you @johncaudwell (sic)."