Kristen Wiig held back tears as she made what is believed to be her last appearance on 'Saturday Night Live' at the weekend.

The final sketch during the season finale saw the actress - who has been a cast member on the show for seven years - don a cap and gown with guest host Sir Mick Jagger acting as high school principal during a graduation scene.

Kristen's character was singled out as ''one particular student who is leaving this summer'', and she then danced with the Rolling Stones rocker, executive producer Lorne Michaels and other cast members to the group's hit 'She's a Rainbow.'

Kristen then struggled to keep her emotions in check as the show's full ensemble, including Amy Poehler and John Hamm, appeared to sing 'Ruby Tuesday', which features the line

''Still I'm gonna miss you''.

Network NBC have not made any official announcement about Kristen leaving the show, or commented on the rumours that Jason Sudeikis and Andy Samberg are also departing as programme regulars.

It was first reported that the 'Bridesmaids' star would be leaving the show a month ago.

A source said at the time: ''Kristen was talking about leaving a while ago. With her movie success, it's no surprise.''