Lindsay Lohan and Samantha Ronson pulled out of hosting a Valentine's Day bash after being deemed “too sick” to fly.

The Mean Girls actress and her DJ partner were booked to appear at a party at Passions, a nightclub in Florida's Seminole Hard Rock Hotel & Casino on Saturday.

But the bedridden stars had to pull out of the gig on the day of the event.

Sam told People, "We really feel bad, and I work sick when I can, but unfortunately I couldn't drive to Miami, so I'm stuck in New York City with doctor's orders not to fly."

Organisers were left "disappointed" by the cancellation - because they failed to book another act in time for the party.

Director of Marketing for Passions, Amanda Senoff, said, "Lindsay and Samantha stayed out late last night in New York City, and are not feeling well. A doctor said Sam was too sick with the flu to travel and Lindsay is also feeling sick. So they rescheduled for March 7.

Lindsay was spotted screaming at Sam to forgive her (Splash News)

"I conferenced all of Lindsay and Sam's managers for three hours today trying to remedy the situation, and they agreed the girls are sick. What can I say? I am disappointed because this is my first booking for Passions, but these things happen."

Lindsay and Sam were snapped in the middle of another public bust up in the earlier hours of Saturday morning.

All that bickering's gotta be tiring work...

See Lindsay and Sam ringing in the most romantic day of the year with a screaming match below