A petticoat or underskirt is an article of clothing for women; specifically an undergarment to be worn under a skirt or a dress. The petticoat is a separate garment hanging from the waist (unlike the chemise).

In historical contexts (sixteenth to mid-nineteenth centuries), petticoat refers to any separate skirt worn with a gown, bedgown, bodice or jacket; these petticoats are not strictly speaking underwear as they were made to be seen. In both historical and modern contexts, petticoat refers to skirt-like undergarments worn for warmth or to give the skirt or dress the desired fashionable shape. In this context a petticoat may be called a waist slip or underskirt (UK) or half slip (US), with petticoat restricted to extremely full garments. Petticoat can also refer to a full-length slip in the UK, although this usage is somewhat old-fashioned.

Petticoat is the standard name in English for any underskirt worn as part of non-Western clothing, as with the sari.

The practice of wearing petticoats as undergarments was well established by 1585. Petticoats were worn throughout history by women who wanted to have the currently fashionable shape created by their clothing. The petticoat(s), if sufficiently full or stiff, would hold the overskirt out in a pleasingly domed shape and give the impression of a smaller waist than the wearer actually had. It would also complement the desired large bust.

Sherlyn Chopra (formerly known as Mona Chopra) is an Indian model, singer and actress.

Chopra was born in India in 1984. She did her schooling from Stanley Girls High School. Gradually losing interest in her studies, she turned her attention to films.

Chopra's early acting career was mainly in B-grade Bollywood films. She appeared in movies such as Time Pass, Red Swastik and Game. She also appeared in the Telugu film A film by Aravind.. Chopra was the second guest on Bigg Boss (Season 3). She was evicted from the show on Day 27. She was also a presenter at the 55th Filmfare Awards held in February 2010.

Sherlyn Chopra has always desired to stay in the limelight. On 12 February 2012, after her birthday she published her first naked photo on twitter (Her twitter handle is @SherlynChopra), which was later deleted by twitter.