lindsay lohan and sam ronsonLindsay Lohan reportedly received a $20,000 Cartier ring as a birthday present from BFF/rumoured girlfriend Samantha Ronson last week.

Lindsay turned 22 last Wednesday and celebrated her special day with Sam at her side during her prom-themed birthday party - but a source told the Mirror that Sam was keen to buy a special gift for the actress too as a symbol of their friendship/relationship.

The source explained: “Sam took Lindsay shopping to celebrate her 22nd birthday. Although Lindsay is the major breadwinner, Sam has her own money and is very proud.

“It’s not an engagement ring - simply a token of her commitment.

“Lindsay is thrilled and she and Sam are very content.”