Amanda Holden proved she's barely aged a day as she shared a stunning holiday snap with her daughters Lexi and Hollie on Saturday. The TV star, 55, is currently on holiday in Greece with her family and the star wowed in a plunging orange summer dress. Flashing hints of her toned abs in the bohemian number, Amanda cosied up to her daughters Lexi, 20, and Hollie, 14. The mother appeared to be feeling nostalgic as she shared the recent snap beside a throwback holiday photo from 11 years ago. Beaming in a white minidress in the old snap, Amanda penned: 'Eleven years ago today' alongside a crying emoji. Amanda also celebrated her and Lexi…