Prince William and Kate made 'no effort' to introduce kids to cousin Lilibet

Prince William and Kate Middleton reportedly made no effort to introduce their children to their California-based cousin, Lilibet.

While speaking to US Weekly, royal expert Christopher Andersen revealed that there is still

a lot of tension" between the royal brothers after Harry resigned from royal duties.

He went on to say, "William and Kate made no effort at all to introduce Prince George,

Princess Charlotte and Prince Louis to [Lilibet]".

Adding, "As far as I know, nobody believes they spoke [to each other]."

Despite the snub, the Cambridges sent their niece well wishes for her birthday, which she

celebrated at Frogmore Cottage on June 4. The tweet read, "Wishing a very happy birthday to Lilibet, turning one today!"

Kate and their three children to their daughter, Lilibet's first birthday.