Question: Which popular Indian celebrity found her film debut in Kyun! Ho Gaya Na...?

Context paragraphs:
Kapil Jhaveri: Kapil Jhaveri is an Indian film actor who has appeared in Bollywood films.  He was born in Bahrain.  He made his acting debut in 2003 in the Hindi film Dil Pardesi Ho Gaya, directed by Sawaan Kumar Tak opposite Saloni Aswani and kiuh.  He next appeared in minor roles in Ishq Vishk starring Shahid Kapoor.  He also played lead roles in Saawan... The Love Season featuring Salman Khan and Saloni Aswani again directed by Sawaan Kumar Tak.  He next appeared in a 2006 horror film Aatma opposite Neha.  His acting career restarted in 2015 in the Salman Khan starrer film 'Prem ratan dhan payo'.

Kajal Aggarwal: Kajal Aggarwal (born 19 June 1985) is an Indian film actress and model.  One of the most popular Indian celebrities, she has established a career in the Telugu and Tamil film industries and has been nominated for four Filmfare Awards South.  In addition to acting, Kajal participates in stage shows and is a prominent celebrity endorser for brands and products.

Kyun! Ho Gaya Na...: Kyun!  Ho Gaya Na..., released in English as "Look What's Happened Now", is a 2004 Indian Hindi romance film directed by Samir Karnik starring Vivek Oberoi and Aishwarya Rai in lead roles.  This was the first film of leading South Indian film actress Kajal Aggarwal, who played a small role as a friend of Aishwarya Rai.

Anupama Kumar: Anupama Prakash Kumar (born 4 December 1974), better known as Anupama Kumar, is an Indian film actress and model.  Having appeared in more than 300 ad films, she made her debut as an actress in the 2004 Hindi film "Kyun...!  Ho Gaya Na" and went on to play supporting roles in Tamil films. Besides acting and modelling, Anupama has also worked as a journalist, anchor, visualizer and a television producer.  She won the Vijay Award 2013 for Best Actor in a Supporting Role (Female) for her role in "Muppozhudhum Un Karpanaigal".

Dil Pardesi Ho Gaya: Dil Pardesi Ho Gaya (Punjabi: ਦਿਲ ਪਰਦੇਸੀ ਹੋ ਗਿਆ ) is a Punjabi film, directed by Thakur Tapasvi, starring Inderjit Nikku and Sana Nawaz Khan in lead roles with Shakti Kapoor, Daljit Kaur, Jaspal Bhatti, Raza Murad, Muhammad Sadiq, Sardar Sohi and other.  The movie is a punjabi version of bollywood movie filmpardesi ho gaya.

Kanchi Singh: Kanchi Singh (born 27 March 1996) is an Indian television actress.  She made her debut as a child artist in TV show "Kutumb".  She played the lead role of Avni in "Aur Pyaar Ho Gaya (TV series)".  She played the role of Gayu in Star Plus popular show Yeh Rishta Kya Kehlata Hai.

Aishwarya Rai filmography: Indian actress Aishwarya Rai, credited as Aishwarya Rai Bachchan after her marriage, has appeared in over 40 films in five languages, predominantly Hindi, Tamil and English.  She made her acting debut in 1997 with a dual role in Mani Ratnam's Tamil political drama film "Iruvar", and her Bollywood debut that same year in the romantic comedy "Aur Pyaar Ho Gaya" opposite Bobby Deol.  Rai followed it with a leading role in "Jeans" (1998), a high-profile Tamil film that was submitted as India's official entry to the Academy Awards.  She won the Filmfare Award for Best Actress for her breakthrough role in Sanjay Leela Bhansali's romantic drama "Hum Dil De Chuke Sanam" (1999).  Rai then starred as a singer in her second successful film of 1999the musical drama "Taal".

Oye Hoye Pyar Ho Gaya: Oye Hoye Pyar Ho Gaya is a 2013 Punjabi film directed by Aditya Sood and starring Sharry Mann, Jimmy Sharma, Niharika Kareer as the main cast of the film and will release on 14 June 2013.  ‘Oye Hoye Pyar Ho Gaya’ is a story of two fun loving friends Sharry (Sharry Mann) and Harry (Rana Ranbir).  Sharry falls for Meet (Niharika Kareer), who is daughter of Police Commissioner Shamsher Singh (Yograj Singh). Chamkila (Binnu Dhillon) who is also trying his chances on Meet gets envy of Sharry and tries tarnishing his image in front of Meet’s family.  Kartar (Jimmy Sharma) son of Police Commissioner and elder brother of meet so he is the main hurdle whom sharry has to pass in the story and commissioner discuss everything with him before taking any decision.

Kajal Aggarwal filmography: Kajal Aggarwal is an Indian actress who appears in primarily in Telugu and Tamil films.  She made her acting debut with a minor role in the Hindi film "Kyun!  Ho Gaya Na...", a box office failure.  She later signed up P. Bharathiraja's Tamil film "Bommalattam", which was to have been her first film in that language, but it was delayed.  Aggarwal debuted in Telugu cinema with "Lakshmi Kalyanam" (2007), which was her first film as a lead actress but failed.  Her other Telugu film that year, "Chandamama", became her first success.  Her first Tamil debut "Pazhani" came the following year, as did "Bommalattam", after a long delay.  The following year, she had four releases.  One of them - S. S. Rajamouli's Telugu film "Magadheera" - became a major breakthrough for her, and earned her a Filmfare Award for Best Actress – Telugu nomination.

Aur Pyaar Ho Gaya: Aur Pyaar Ho Gaya (English: And Love Happened) is a 1997 Indian Hindi romance film directed by Rahul Rawail and starring Bobby Deol and Aishwarya Rai.  This film marked the Hindi film debut for Aishwarya Rai.  The film's music was composed by the celebrated Qawwali singer, Nusrat Fateh Ali Khan who also makes a cameo appearance in the film.  He died only a day after the film's release.  It is loosely based on the 1994 English film "Only You".  The film managed to do average business at box office.

Supporting paragraphs: Kyun! Ho Gaya Na... Kajal Aggarwal
Answer: Kajal Aggarwal