Is Lady Gaga pregnant?

Lady Gaga at her parfume launch in New York last week

Kelly Osbourne thinks Lady Gaga is pregnant.

The outspoken Fashion Police star shared her observations on the Born This Way singer's noticeable weight gain and claimed Gaga - who is dating Vampire Diaries actor Taylor Kinney - has been hiding her stomach lately.

Speaking on Alan Carr's Channel 4 show, she said: "I think she is pregnant because she has been covering up this part of her body recently and I have been noticing that a lot.

"And her style has changed and you can't bleach your hair blonde when you are pregnant."

However, Kelly's comments came before Lady Gaga praised marijuana as she lit up on stage in Amsterdam.

The 26-year-old singer told her fans she had cut down on drinking alcohol because she prefers smoking the drug and revealed it had been hugely beneficial to her music.

She said: "I want you to know it has totally changed my life and I've really cut down on drinking. It has been a totally spiritual experience for me with my music.

"It's like saying everybody needs to take a breath and it's going to be OK."

She also joked she was going to talk to US President Barack Obama in a bid to make marijuana legal in America.