Rhys Ifans has reportedly spent a staggering $70,000 on a birthday present for girlfriend Sienna Miller.
The "Notting Hill" actor has commissioned exclusive French jewelers Boucheron to make a one-off yellow diamond necklace for Sienna's 26th birthday on December 28.
A source at Boucheron's London store said, "Rhys had originally thought of buying a ring for Sienna's birthday but he doesn't want to make her feel too pressured and a ring would scare her. Sienna loves vintage jewelry and is a fan of yellow diamonds, so he has been talking to the Paris-based jewelers about a drop look of three yellow diamonds."
"Rhys wants to feel that Sienna is wearing something from him and that he's close to her heart, and a necklace is the nearest thing to that."
The Welsh star has also allegedly booked an exclusive London hotel suite for the special day.
Although the couple are yet to officially confirm their relationship, they have had matching swallow tattoos etched on their bodies to show their love for each other and are currently enjoying a romantic break in Mexico City.
Rhys - who, at 39, is 14 years older than 25-year-old Sienna - has already allegedly proposed to the 'Stardust' actress 15 times.
But following her troubled relationship with Jude Law, Sienna has repeatedly turned down his hand in marriage and is keen to take things slow with Rhys.
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