Ben Affleck, Steven Tyler, Naomi Watts, Nina Dobrev and a massive list of celebs came out to support designer John Varvatos' 10th Annual Stuart House Benefit; Cara Santana, Jesse Metcalfe, Jordana Brewster, and co-stars of "Dallas" step out for a Q&A panel at the 30th Annual PaleyFest; Shenae Grimes, Sarah Hyland, Derek Hough, Lakers stars and other notables tested their luck for a good cause at the Lakers Casino Night Fundraiser benefiting the Lakers Youth Foundation; Julie Bowen, Ginnifer Goodwin, Adam Scott and a bunch of little kids read some books at the 4th Annual Milk And Bookies Story Time Celebration—see which stars were out and about supporting the causes of their choice over the weekend in this edition of Last Night's Parties.