United Kingdom, Aug. 15 -- Tallulah Willis was stunned when her mom Demi Moore surprised her with a performance from Coldplay's Chris Martin at her wedding.

The 32-year-old actress tied the knot with Justin Acee at her childhood home in Sun Valley, Idaho, earlier this month and she will "never forget" the special gift her mother organised, which saw the Yellow singer open the ceremony with a personalised song.

Explaining how "dear friend" Jeremy, who was officiating the wedding, went off script and announced someone special had written something for them Tallulah told Britain's Vogue magazine: "My body froze as I looked instantly at the front row and saw my mom smiling like the cat that got the canary.

"I couldn't believe my ears as a ...