Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)

Kristin Cavallari celebrates her 21st birthday at LAX Nightclub (01/05/08)