Felicity Huffman and Teri Hatcher Felicity Huffman and Teri Hatcher

Now that Porter is keeping Julie's baby on Desperate Housewives, Lynette (Felicity Huffman) and Susan (Teri Hatcher) are going to become closer than ever, right? Wrong!

In this exclusive sneak peek from Sunday's episode (9/8c, ABC), the two grandmothers-to-be are already butting heads, even though the baby girl is months away from being born. After Porter tells his mom that he's going to name the baby Lynette, Susan decides her name should be Sophie.

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"I thought you were into being the hands-off grandma," Susan tells Lynette. "I guess I didn't count on you being the pushy grandma," Lynette replies. (To which we reply: Really, Lynette?)What will the new arrival be named? Will she be raised in Susan's house or Lynette's?Watch Susan and Lynette go head-to-head in the clip:

Which baby name do you like better? And shouldn't this baby obviously be named Mary Alice?