Lindsay Lohan Boyfriend Calum Best Spotted Out With Kimberly Stewart

Lindsay Lohan has a boyfriend now.  So sayeth La Lohan.  Lilo was in for a special treat when she celebrated her 21st birthday at Courteney Cox's Malibu, Calif., home on Monday.  Reports claim that her "boyfriend" Calum Best flew in from London for the big bash.  Later on he was spotted out with Rod Stewart's daughter Kimberly Stewart.

Lindsay Lohan "Boyfriend" Calum Best Spotted Out With Kimberly Stewart

Innocent?  Reports placed Kimberly with rock drummer Tommy Lee earlier but who can really keep up?  After Lilo hit Promises a British newspaper had photos of Calum with two call girls. Best had promised to check into rehab for cocaine addiction, though he has yet to actually do so.

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Maybe he's going for second hand from Lindsay.  The Daily Dish! reports that Best has been supporting Lohan since her rehab stint began last month, and recently called his girlfriend "fantastic" in a magazine interview.

Best stated, "It's early days, but it's going real great. She's a fantastic girl." While many might wonder about what happened at Lindsay Lohan's 21st birthday party, Dina Lohan told People that LiLo's party was "a quiet, lovely day with family and true friends."

Hollyscoop has Calum and Kimberly here.