Kirsten Gillibrand is sworn in. From the Associated Press:

WASHINGTON (AP) — Kirsten Gillibrand, a little-known, pro-gun Democrat from upstate New York, was sworn in Tuesday as the state’s junior U.S. senator.
Gov. David Paterson appointed the second-term congresswoman to the Senate seat last Friday. She was named to the post after Caroline Kennedy, the presumed front-runner, withdrew from contention because of personal reasons.
After she was sworn in at the U.S. Capitol by Vice President Joe Biden, she told reporters that becoming a senator was something she never could’ve imagined.
“I feel incredibly grateful that the governor placed his trust in me,” Gillibrand said. “To have the opportunity to serve this entire state at a time of great economic crisis is an extraordinary responsibility and I take that responsibility very seriously.”
Watching the swearing-in was her husband and two young boys, as well as several other family members.
Gillibrand fills a seat vacated when Sen. Hillary Rodham Clinton became secretary of state. Her appointment lasts until 2010, when a special election will be held to fill the final two years of Clinton’s term.
At 42, Gillibrand became the youngest U.S. senator and is the 17th woman in the chamber.
She said her first order of business was to focus on improving the economy in New York