Paris Hilton is "so happy" for Kim Kardashian's success.

The blonde socialite first met the 'Keeping Up With the Kardashians' star - who is pregnant with boyfriend Kanye West's baby - in school, long before Kim's career took off and despite feuding over the years, Paris is happy for her pal's achievements and wishes her the best in life.

Speaking at the Los Angeles premiere of Sofia Coppola's film 'The Bling Ring' - in which Paris has a cameo, after being involved in the real-life events featured in the movie - she told TV show Entertainment Tonight: "I'm so happy for [Kim]. I'm happy for all my friends. I always wish everyone the best. It's important in life, it's important for good karma and I'm so happy to help anyone out.

"She's always wanted a little princess, I can't wait to see how she dresses her up. It's going to be a beautiful baby."

Paris, 32, is also over the moon with her own love life praising her boyfriend River Viiperi, 21, for having "such a big heart".

She added: "He's so sweet. He has such a big heart. I trust him so much. I'm really happy."

Paris recently signed a new music contract with Cash Money records and has been busy recording her the follow up to her 2006 self-titled debut album.

She said: "I'm in the studio. I'm almost finished. I'm really excited. The first single will drop in the next month or two."