Three big-time parties, all helping the Creative Alliance celebrate its 21st birthday (about time it came of age) Saturday, complete with food, dance, live music, art and who knows what else. The VIP Starship Dinner, honoring retiring U.S. Senator Barbara Mikulski and activist Lea Gilmore, runs 5:30 p.m.-midnight (which includes the night's other two parties). $250. Leeloo's Lounge Party, featuring live music from Black Alley and a Super Art Fight, starts at 7:30 p.m. $90 (includes entrance to the next party). And the Deep Space Dance Party, with music from Black Alley (plus a cosmos-themed photo booth) starts at 9:30 p.m. $30-$40. 3134 Eastern Ave. creativealliance.org.