Jenner unveils new look

Caitlyn Jenner, the transgender Olympic champion formerly known as Bruce, unveiled her new name and sexy look on Monday in a Vanity Fair covershoot - drawing widespread praise and smashing a Twitter record.

Lesbian, gay, bisexual and transgender campaigners - and many well-wishers - welcomed the high-profile debut, as did the 65-year-old Jenner's family, which includes the media-savvy Kardashian clan.

Jenner managed to break President Barack Obama's record for amassing one million Twitter followers in the shortest time - about four hours.