Charities often look to the stars to promote good causes, and this year actress Kristen Bell has been named the most sought after patron.
Having pipped Kate Moss and Stephen Fry to the post, the Frozen star has fronted more charity campaigns in 2015 than any of her peers, according to data from A-list profiling platform Celebrity Intelligence.
The tool monitors brand partnership deals year-round, and the research was collated using data from 50,000 celebrity profiles.
From Vivienne Westwood to Ricky Gervais, scroll down to see who else made it on to the list.
1. Kristen Bell
Having received an award for Youth Advocacy at the Noble Awards in September, Bell has been the number one choice this year for charities looking to highlight their cause. She used her Frozen powers to help raise money for non-profit organisation Chrysalis back in July, and has fronted campaigns for a number of charities this year including the Alliance of Moms, #Down2Adopt, Rotary and For Our Oceans.
2. Lena Dunham
Girls star and writer Lena Dunham secured second place. As well as fronting Breast Cancer Research's 'Paddle and Party for Pink' event in the summer, the 29 year-old raised money for NGO Planned Parenthood by auctioning her clothes.
3. Kate Moss
Involvement in campaigns for Save the Children, Save the Arctic and Breakthrough Breast Cancer placed Kate Moss at number three. In October, the model's shoes were auctioned off as part of the Small Steps Project to raise funds to provide clothing and emergency air for children living on the streets.
4. Dame Vivienne Westwood
Having scored a total of six endorsements in 2015, Vivienne Westwood scooped fourth place. The fashion designer joined the fight against climate change at the COP21 summit in Paries earlier this month, and was immortalised in a veggie portrait for Peta's World Vegetarian Day campaign.
5. Arlene Phillips
Former Strictly Come Dancing judge Arlene Phillips landed at number five. 2015 saw her take part in Comic Relief's 'Danceathon' for the BBC and the choreographer also fronted the British Heart Foundation's 'Bag It' stock donation appeal.
6. Phillip Schofield
This Morning presenter Philip Schofield became the face of five charities in 2015. He is a patron of Chase Hospice Care for Children and Text Santa.
7. Stephen Fry
President of mental health charity Mind, Stephen Fry also supported the Rainforest Foundation UK, Wildlife Crime Awareness Week and Stand Out to Stop Bowel Cancer in 2015.
8. Pamela Anderson
A longstanding patron, Pamela Anderson helped host Peta's 25th Anniversary Gala in October, and signed the non-profit organisation's petition calling for performance company Ringling Bros to retire its exotic animals.
9. Ricky Gervais
Help for Heroes supporter and animal rights campaigner Ricky Gervais scored ninth. In 2015, he helped raise awareness for charities such as World Animal Protection, the Small Steps project and Animal Defenders International.
10. Matt Johnson
He has THE best jokes @bbccin A photo posted by Matt Johnson (@mattjohnsons) on
Completing the top ten was TV presenter Matt Johnson, who kicked off the year with a cross-country cycle for mental health charity Mind and took part in BBC Children in Need.