The 'Twilight Saga' actress - who turned 24 today (21.02.11) - was thrilled by the gift from her singer boyfriend, even though he had no idea it had been created by the famed fashion house, confusing it with another designer brand.
She explained to People magazine: "The funny thing about it is when I got it, my boyfriend said it's vintage Coach - and I was like, 'Thanks so much.' And then I put it on and was like, 'Oh my god, this is Chanel.
"It was very cute and sweet and adorable to me because my boyfriend gave it to me. Coach, Chanel, it makes no difference to him... But I absolutely love it because he knows what I like."
Ashley showed off the jewellery as she celebrated her birthday Las Vegas' Pure Nightclub on Saturday (19.02.11) - where guests tucked into sweet treats including oversized lollipops and a three-tiered birthday cake - and was delighted so many of her friends joined her to celebrate her special day.
She said: "I know this is cheesy but the biggest gift to me was having my best friends fly in to celebrate with me."