Lindsay Goes Red!

With all the work Lindsay Lohan's been putting in on the set of Labor Pains lately, we've been wondering where she gets the energy - until we noticed her choice in energy drinks, that is!

Yesterday, we caught Lindsay going to and fro on the set clutching a can of Red Bull. Unfortunately, while the beverage gave her plenty of energy around her fellow actors, all her pep disappeared around the paps - her answers kept getting shorter and snippier as the day wore on. Jeez, Lindsay - why all the Bull?

Thankfully, as the day wound down, we noticed Lindsay receiving her best bud Samantha Ronson for another on-set visit. Hey, nothing makes for a better pick-me-up than a visit from your closest companion!

In fact, Page Six is reporting that Sam's presence always does wonders for Lindsay's work ethic due to what a friend calls the "calming effect" Ronson has on Lohan. "She's showing up early for call time, she knows her lines and her co-workers actually liker her," the friend said. "She's a total pro now."

Atta girl, Lindsay - hearing good news like this gives us wings!