clarkson120612_01_230.jpgLots of life-changing experiences for celebs today!

Kelly Clarkson Engaged
Kelly Clarkson told Ellen DeGeneres she's engaged to boyfriend Brandon Blackstock. The former American Idol winner Tweeted today, "I'm engaged!" the day after accepting her b-friend's proposal. "I wanted y'all to know! Happiest night of my life last night! I am so lucky and am with the greatest man ever," the singer Tweeted.

Jessica Simpson Walks Down The Aisle
Meanwhile ... Jessica Simpson's BFF CaCee Cobb married long-time love, Scrubs star Donald Faison. The happy couple tied the knot at pal Zach Braff's LA home. A pregnant Simpson was one of Cobb's bridesmaids and Jess' separated parents, Tina and Joe also attended, along with her fiance Eric Johnson and sister Ashlee.

Marisa Miller Has A Baby Boy
And in other news ... Victoria's Secret model Marisa Miller gave birth to a boy, Gavin Lee Guess, in Santa Cruz, Calif. today. The model mom released the following statement: "I'm completely overjoyed by the birth of our son. I feel so blessed to be a mom and am so excited to experience this next part of life."

Congrats too all these celebs ... at least there's some good news today!