Actress Kristin Davis broke down in tears on national television as she described her experience of visiting a refugee camp in Kenya.

The Sex And The City star welled up on BBC Breakfast as she spoke to hosts Bill Turnbull and Sian Williams about her trip to Dadaab refugee camp. The 46-year-old has just returned from the region, which Angelina Jolie (pictured) also visited in 2009, in her role as an Oxfam ambassador.

Describing conditions at the camp - which has been overwhelmed in recent weeks by nearly 400,000 people fleeing drought and conflict in neighbouring Somalia - Kristin said: "We were really unprepared for how shocking it is."

"I think the main thing that struck me was how desperate their situation was that they left ... The camp is so overfilled that a lot of these people, who are mostly women and children, have walked 20 days they have lost family members along the way ... I might cry."

The actress became particularly emotional as she recalled a female refugee she spoke to whose husband and two children had died as she escaped Somalia and who could no longer walk.

"I am exceptionally lucky and I have lived a blessed life in many ways," the actress said, adding: "It's just really hard to believe it's 2011 and people are living like this."

Kristin is best known for playing Charlotte York in the hit HBO show, but is also a commited advocate of social justice. Watch her interview on BBC Breakfast in the video below.

Kristin Davis in tears on TV