Not only, as we know, was she at the big Hollywood politico pow-wow, but…
She was also one of the many celebs to attend Tammy Haddad's exclusive Garden Brunch earlier in the day.
Lohan was on her best behavior hanging with boldfaced names like Rosario Dawson. And if there was any hard feelings for the problems she reportedly created while recently filming her guest stint on Glee, it certainly didn't appear to bother Matthew Morrison when he said hello to Lohan.
LiLo looked Capitol Hill chic in a cream dress with a matching jacket and Chanel bag, her red hair loose and parted in the middle. Accompanying her to the event—which benefited the CURE and The White Ribbon Alliance for Safe Motherhood—were her attorney Shawn Holley and Correspondents' Dinner host, Greta van Susteren.
Also at the afternoon soiree were The Hunger Games' Woody Harrelson, Kerry Washington, Chace Crawford, Elle Macpherson, Kate Upton and reality television momanger Kris Jenner as well as media types including Chris Wallace, Arianna Huffington, Jonathan Capehart of The Washington Post and MSNBC's Thomas Roberts, among others.
Meghan McCain was also there, but a rep for the blogger tells me she "did not see or talk to" van Susteren and Lohan.
McCain tweeted yesterday, "My mother would appreciate it if I didn't tweet or do anything controversial for at least 24 hours. I am trying."
Holley raves that Lohan was the "belle of the ball" at the dinner.
"Everyone wanted to have their picture taken with her and she graciously obliged," she told E! News exclusively. "She was thrilled to be in the same room with the president and first lady. What a magical night!"
Van Susteren also gushed. "The table was flooded with people who wanted to meet Kim [Kardashian] and Kris [Jenner] and Lindsay," she said. "The pictures just didn't stop. All three were extremely gracious to people. I don't know how they do it. People wanted picture after picture. They were all gracious. The evening went off beautifully."
—Additional reporting by Ken Baker and Katie Rhames