Pregnant Penny Lancaster Shows Perfect Pins Velvet Minidress

She may be four-and-a-half months pregnant, but that's not stopping Penny Lancaster experimenting with her wardrobe.

The 39-year-old model, who is expecting her second child with husband Rod Stewart, donned a tiny velvet minidress and patterned tights for an event in London last night.

And while Lancaster drew attention to her incredibly long 36-inch legs in the black hosiery, there was barely a hint of a burgeoning bump beneath her puff-sleeved dress.

It was only when Lancaster turned to the side that the tiniest hint of a bump could be seen on her way into the Wellchild Awards at the InterContinental Hotel in London.

The only other sign that Lancaster was pregnant was her slightly rounded face and radiant pregnancy glow.

The baby, due in February, will be the second child for Lancaster and Stewart, who are already parents to four-year-old Alastair. It will be Stewart's eighth child.

The pair have made no secret about the difficulty they have had conceiving, finally becoming pregnant on Lancaster's third round of IVF.

And Lancaster admits she couldn't control her emotions when she discovered she was pregnant.

She said: 'I couldn’t believe it. I burst into tears.

'I called Rod when I was still sobbing. Rod said, “I’m in the middle of a restaurant in Russia, crying”.

‘I kept pinching myself. Neither of us could believe it.’

Stewart has already fathered seven children.

His eldest-daughter Sarah Streeter is 46, and was conceived when the singer was just 18.

His second-eldest Kimberley, 30, and Sean, 29, is from his marriage to first wife Alana.

Stewart went on to have another daughter, Ruby, 23, with girlfriend Kelly Emberg. He then had Renee, 18, and son Liam, 15, with his ex-wife, model Rachel Hunter.

However, Stewart said this baby will definitely be his last.

He explained: 'I'm very happy but it will be the last. I can't have any more kids, otherwise I'll be touring until I'm 90.'

Stewart is one of the best-selling British artists of all time with sales of more than 250million records worldwide.

The star's new album Fly Me To The Moon...The Great American Songbook, Vol. 5, comes out on 19 October.

To publicise the release, Rod will be playing a gig live on the Home Shopping Network on 9 October.

He will also be flying to America after the release to promote the record on shows including Jimmy Kimmel Live, Good Morning America and The Tonight Show With Jay Leno.