Nadine Coyle Touches Baby Bump As She Arrives In London With Rumoured Baby Daddy (PICTURES)

Pregnant Girls Aloud star Nadine Coyle has arrived back in the UK after announcing her happy baby news, placing a motherly hand on her stomach as she walked through London's Heathrow airport.

Nadine Coyle touches her baby bump

The popstar was accompanied by her on/off boyfriend Jason Bell, once again sparking rumours that he could be her baby's father, as she left the airport in a tightly wrapped black coat.

Nadine announced she was pregnant in August by posting the news on Instagram with a snap of herself and the words 'I'm having a baby' underneath.

Nadine posted this picture on Instagram to announce her news

As Nadine has kept quiet about her love life in recent years, the identity of her baby daddy has not been confirmed, but it was rumoured she had reunited with her ex-fiancé, American footballer Jason, back in March.

The pair's relationship ended after a year's engagement in June 2011.

Jason carries Nadine's bags

Nadine will be the first of her former Girls Aloud bandmates to become a mum.

The band - Nadine, Cheryl Cole, Kimberley Walsh, Sarah Harding and Nicola Roberts - recently reunited for a 10-year celebration tour but split after their final concert in March.

Girls Aloud Through The Years