Madison, Marquardt congratulate Kendra

Holly Madison and Bridget Marquardt have offered their congratulations to former Girls Next Door co-star Kendra Wilkinson, who has given birth to her first child.

The model and husband Hank Baskett welcomed son Hank Baskett IV in Indianapolis this morning.

Writing on her Twitter page, Madison said: "Congrats Kendra! A 9-pounder!"

Marquardt added: "Well, it's official. Kendra's baby is born. Little Hank is here! 9lbs 5oz... Wow! Congrats to Kendra and Hank!"

Wilkinson's former bofyriend Hugh Hefner also offered his well wishes shortly before news of the birth was reported.